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Unit 1 Happy Holiday 知识框架速览
本单元是八年级语法开篇第一战，核心锁定一般过去时（Simple Past Tense）的系统复习与运用。重点在于熟练使用动词过去式（规则与不规则）谈论假期活动，并掌握复合不定代词（someone/anything）的用法。
1. 核心词汇
假期活动：go on vacation, stay at home, go to the mountains/beach, visit museums, go to summer camp, take photos
感受描述：relaxing, boring, delicious, terrible, expensive, cheap
高频动词：go (went), see (saw), take (took), eat (ate), have (had), do (did), buy (bought)
2. 关键句型
询问假期：Where did you go on vacation — I went to New York City.
确认活动：Did you buy anything special — Yes, I bought something for my father.
描述感受：How was the food — Everything tasted really good!
3. 语法聚焦
一般过去时：主语 + 动词过去式 + 其他（时间标志：yesterday, last week, ...ago）
复合不定代词：something, anything, nothing, everything（定语后置：anything special）
系动词过去式：was/were（It was great. / They were tired.）
高频易错点解析
易错点1：助动词 did 后的动词“打回原形”
错误案例：Where did you went last weekend / He didn’t ate breakfast.
正确形式：Where did you go last weekend / He didn’t eat breakfast.
避坑指南：在疑问句（Did...）和否定句（didn’t）中，助动词 did 已经承担了“过去时”的语法功能，后面的主要动词必须还原为动词原形。这是考试最高频的失分点。
易错点2：复合不定代词“定语后置”遗忘
错误案例：I bought something special. （正确） / I bought special something. （错误）
避坑指南：something, anything, everything 等复合不定代词，修饰它们的形容词必须放在后面。例如：anything interesting, something important。
易错点3：不规则动词的“过度规则化”
错误案例：I goed to the museum. / She buyed a gift.
正确形式：I went to the museum. / She bought a gift.
避坑指南：go, buy, eat, see 等属于不规则动词，其过去式（went, bought, ate, saw）必须死记硬背，不能简单套用“动词+ed”的规则。
典型习题精练
一、用所给动词的过去式填空
1. I ________ (go) to the beach with my family last Sunday.
2.She ________ (not do) her homework yesterday because she ________ (be) ill.
3.—What did you do —I ________ (watch) TV and ________ (read) a book.
二、单项选择
1.—______ you ______ out with anyone last night —No, I stayed alone.
A. Do; go B. Did; go C. Did; went D. Do; went
2. Did you buy ______ special for your parents
A. something B. anything C. someone D. anyone
三、改错题
1.He didn’t went to school yesterday. （找出错误并改正）
2. I want to buy important something. （找出错误并改正）
参考答案：
一、1. went 2. didn’t do; was 3. watched; read
二、1.B (Did...go) 5. B (疑问句用 anything)
三、
1.went → go (didn’t 后接动词原形)
2. important something → something important（定语后置）Unit 2 Home Sweet Home 知识框架速览
本单元聚焦家庭生活与家务劳动，核心语法是情态动词 could 表示礼貌请求以及一般过去时的巩固。重点在于学会用英语描述家务、发出指令并回忆家庭活动。
1. 核心词汇
家务劳动：sweep the floor, take out the rubbish, clean the bathroom, feed the fish, water the plants, pack up things
家居环境：bathroom, bedroom, living room, balcony, community, apartment
高频动词：borrow（借入）, lend（借出）, invite, decorate, hang (hung)
2. 关键句型
礼貌请求：Could you please sweep the floor — Yes, sure. / Sorry, I can’t.
询问职责：What chores do you have to do at home — I have to take out the rubbish.
描述过去：What did you do last weekend — I cleaned my room.
3. 语法聚焦
Could 表请求：Could you please + 动词原形 （比 Can 更礼貌）
一般过去时：复习规则动词（cleaned）与不规则动词（feed→fed, hang→hung）的过去式。
借阅辨析：borrow（借入，常接 from），lend（借出，常接 to）。
高频易错点解析
易错点1：Could you please 后接动词原形
错误案例：Could you please sweeping the floor / Could you helped me
正确形式：Could you please sweep the floor / Could you help me
避坑指南：Could you please... 是表示礼貌请求的固定句型，please 后面必须接动词原形，绝不能受时态影响而改变动词形式。
易错点2：borrow 与 lend 的“方向”混淆
错误案例：Can you borrow me your pen （你想表达：你能借我笔吗？）
正确形式：Can you lend me your pen 或 Can I borrow your pen
避坑指南：borrow 是“借入”（从别人那里拿），搭配 from；lend 是“借出”（给别人），搭配 to。口诀：borrow 是借进，lend 是借出。
易错点3：不规则动词过去式的误用
错误案例：I feed the fish yesterday. / She hanged the photo.
正确形式：I fed the fish yesterday. / She hung the photo.
避坑指南：feed（fed）, hang（hung）, sweep（swept）属于不规则动词，其过去式变化无规律，需单独记忆，不能简单加 -ed。
典型习题精练
一、用所给词的适当形式填空
Could you please ________ (take) out the rubbish
She ________ (feed) her cat and then went to school yesterday morning.
3.My brother ________ (borrow) a book from the library last week.
二、单项选择
4.—______ you please pass me the salt —Sure, here you are.
A. Can B. Could C. Do D. Would
5.—Can I ______ your dictionary —Sorry, I ______ it to Lucy.
A. borrow; lent B. lend; borrowed C. borrow; borrow D. lend; lend
三、改错题
6. Could you please helping me clean the room （找出错误并改正）
7.He borrowed his bike to me last Sunday. （找出错误并改正）
参考答案：
1. take (Could you please 后接动词原形)
2.fed (yesterday 提示用过去式，feed→fed)
3.borrowed (last week 提示用过去式)
4. B (Could you please 是固定礼貌请求句型)
5. A (borrow 借入；lend 借出，且时态一致)
6. helping → help (Could you please 后接动词原形)
7.borrowed → lent (borrow 是借入，此处应为“借出”，用 lend→lent)Unit 3 Same or Different 知识框架速览
本单元是八年级上册的语法重难点单元，核心在于系统学习形容词与副词的比较级，掌握人物外貌、性格的对比描述，并理解“相似与差异”的表达方式。
1. 核心词汇
人物性格：outgoing（外向的）, shy, serious, friendly, talented, hard-working, funny, kind, lazy
比较概念：similar（相似的）, different, compare, contrast, difference, similarity
高频短语：be similar to, be different from, have...in common, as...as..., more...than...
2. 关键句型
比较差异：A is taller than B. / A is more outgoing than B.
同级比较：A is as friendly as B. / A is not as tall as B.
询问异同：Are you similar to your best friend / What’s the difference between A and B
3. 语法聚焦
比较级构成：
规则变化：tall → taller, happy → happier（变y为i+er）, beautiful → more beautiful
不规则变化：good/well → better, bad/badly → worse, many/much → more
比较级句型：主语 + be + 比较级 + than + 比较对象
同级比较：as + 原级 + as（和……一样）
高频易错点解析
易错点1：比较级“双写”与“变y为i”规则混淆
错误案例：He is more lazy than me. / She is funnyer than her sister.
正确形式：He is lazier than me. / She is funnier than her sister.
避坑指南：以“辅音字母+y”结尾的双音节词（如 lazy, funny, happy），必须先变y为i，再加 -er。多音节词（如 beautiful, outgoing）才用 more。
易错点2：than 前后比较对象不一致（逻辑错误）
错误案例：The weather in Beijing is colder than Shanghai.（北京天气 vs 上海城市）
正确形式：The weather in Beijing is colder than that in Shanghai.（北京天气 vs 上海天气）
避坑指南：than 前后的比较对象必须对等。如果前面是“北京的天气”，后面必须是“上海的天气”，常用 that（单数）或 those（复数）指代前面提到的名词。
易错点3：as...as 中间误用比较级
错误案例：I am as taller as my brother.
正确形式：I am as tall as my brother.
避坑指南：as...as 表示“和……一样”，中间必须用形容词或副词的原级，绝不能加 -er 或 more。
典型习题精练
用所给词的适当形式填空（比较级）
1.My sister is __________ (tall) than me.
2. This story is __________ (interesting) than that one.
3.Tom runs __________ (fast) than Jim.
二、单项选择
4. Lucy is __________ than Lily. She always makes us laugh.
A. funny B. funnier C. more funny D. funniest
5. —Is your best friend similar __________ you —Yes, we both like sports.
A. as B. with C. to D. for
6.I think English is __________ as math.
A. as important B. more important C. importanter D. so important
三、改错题
7. This box is more heavier than that one. （找出错误并改正）
8. My hair is longer than my sister. （找出错误并改正）
参考答案：
1.taller 2. more interesting 3. faster 4.B (funnier，以y结尾变i+er)
5.C (be similar to 固定搭配)
6.A (as...as 中间用原级)
7.more heavier → heavier (heavy 的比较级是 heavier，前面不能加 more)
8. my sister → my sister’s (比较对象要对等：我的头发 vs 我姐姐的头发)Unit 4 Amazing Plants and Animals 知识框架速览
本单元是形容词/副词最高级的专项突破，主题围绕“自然奇观与生态保护”。重点在于掌握描述动植物特征（最大、最快、最古老）的表达，并学会使用最高级进行多者比较。
1. 核心词汇
动植物名称：bamboo（竹子）, blue whale（蓝鲸）, cheetah（猎豹）, butterfly（蝴蝶）, ginkgo（银杏）, rose（玫瑰）, ecosystem（生态系统）
特征描述：largest, heaviest, fastest-growing, oldest, amazing, endangered（濒危的）, useful
生态保护：protect...from（保护...免受）, in danger（处于危险中）, die out（灭绝）, take action（采取行动）
2. 关键句型
询问之最：What’s the largest animal in the world — The blue whale is.
最高级描述：The cheetah is the fastest land animal. / Bamboo is one of the fastest-growing plants.
感叹句：What amazing plants! / How fast the cheetah runs!
3. 语法聚焦
最高级构成：
规则：tall → tallest, heavy → heaviest（变y为i+est）, interesting → the most interesting
不规则：good → best, bad → worst, many/much → most
句型结构：主语 + be + the + 最高级 + 名词 + in/of（范围）
“最...之一”：one of the + 最高级 + 复数名词（如：one of the oldest trees）
高频易错点解析
易错点1：最高级前漏掉定冠词 the
错误案例：It is largest animal in the world. / This is most interesting book.
正确形式：It is the largest animal in the world. / This is the most interesting book.
避坑指南：形容词最高级前必须加 the（副词最高级前可省略）。只有在物主代词（my, his）或指示代词（this, that）前才可省略 the（如：my best friend）。
易错点2：one of the 后名词未用复数
错误案例：It is one of the oldest tree in China.
正确形式：It is one of the oldest trees in China.
避坑指南：one of the 表示“...其中之一”，后面的名词必须是复数形式，因为它是从“很多个”里面选出的一个。
易错点3：比较范围介词混淆（in vs of）
错误案例：He is the tallest of our class. / This is the best picture in all the pictures.
正确形式：He is the tallest in our class. / This is the best picture of all the pictures.
避坑指南：表示群体范围（如班级、学校、城市）用 in；表示同类事物集合（如所有图片、所有学生）用 of。
典型习题精练
一、用所给词的适当形式填空（最高级）
1. The blue whale is __________ (large) animal in the world.
2. I think pandas are one of __________ (interesting) animals in China.
3. She runs __________ (fast) in her class.
二、单项选择
4. The cheetah is ______ fastest runner ______ all land animals.
A. a; in B. the; of C. the; in D. a; of
5. This is ______ most amazing plant I have ever seen.
A. a B. an C. the D. /
6. —______ beautiful the butterfly is! —Yes, it has the most colorful wings.
A. What B. How C. What a D. How a
三、改错题
This tree is one of the oldest tree in the forest. （找出错误并改正）
8.He is tallest student of our class. （找出错误并改正）
参考答案：
1.the largest 2. the most interesting 3. (the) fastest
B (the fastest of all 表示“所有之中最快的”)
C (最高级前加 the)
B (How + 形容词 + 主语 + 谓语)
tree → trees (one of the 后接复数名词)
tallest → the tallest (最高级前缺 the)Unit 5 What a Delicious Meal! 知识框架速览
本单元是“美食与烹饪”主题单元，核心语法是感叹句（What/How）和祈使句（描述步骤）。重点在于学会用英语描述食物、表达感受，并清晰说明烹饪流程。
1. 核心词汇
食材与餐具：potato, tomato, onion, salt, pepper, oil, vinegar, bowl, plate, knife, fork, spoon
烹饪动作：cut up（切碎）, peel（削皮）, boil（煮）, fry（煎）, bake（烤）, stir-fry（炒）, mix（混合）, add...to...（添加）, pour...into...（倒入）
味道评价：delicious, tasty, sweet, sour, salty, hot（辣的）, awful
2. 关键句型
感叹句：What a delicious meal! / How delicious the meal is!
询问看法：What do you think of the soup — It’s a little too salty.
描述步骤：First, cut up the vegetables. Next, heat the oil. Then, fry them. Finally, add salt.
3. 语法聚焦
感叹句结构：
What + (a/an) + 形容词 + 名词（+ 主语 + 谓语）!（如：What a nice day!）
How + 形容词/副词 + 主语 + 谓语!（如：How fast he runs!）
祈使句：动词原形开头，用于给出指令（如：Add some sugar. Don’t pour too much oil.）
量词短语：a piece of（一片）, a cup of（一杯）, a tablespoon of（一汤匙）
高频易错点解析
易错点1：What 与 How 引导的感叹句结构混淆
错误案例：What delicious the soup is! / How a delicious soup!
正确形式：How delicious the soup is! / What a delicious soup!
避坑指南：判断核心词是名词还是形容词/副词。What 修饰名词（需注意单数可数名词前加 a/an）；How 修饰形容词/副词（直接加在句首）。口诀：What 后必有名词，How 后紧跟形/副。
易错点2：祈使句描述步骤时误用动词形式
错误案例：First, cutting the tomatoes. / Next, you add some salt.
正确形式：First, cut the tomatoes. / Next, add some salt.
避坑指南：在食谱或操作说明中，描述步骤必须使用动词原形开头的祈使句，省略主语（you），直接给出动作指令。不要使用动名词（-ing）或完整的主谓结构。
易错点3：不可数名词（食材）的量词遗漏
错误案例：Add salt. / We need water.
正确形式：Add a little salt. / We need a cup of water.
避坑指南：salt, water, oil, bread 等是不可数名词，不能直接加 -s，也不能直接用数词修饰。表示数量时，必须借助量词（a little, a cup of, a teaspoon of）或直接用 some。
典型习题精练
一、用 What 或 How 完成感叹句。
1.______ a beautiful flower it is!
2.______ carefully he is listening!
3.______ delicious the fish is!
二、用所给词的适当形式填空（祈使句/步骤）
4.______ (cut) up the bananas first.
5.______ (not pour) too much milk into the blender.
6. Next, ______ (add) some sugar to the coffee.
三、单项选择
7. —______ do you think of the fried chicken —It’s too oily.
A. How B. What C. Why D. When
8. Please add ______ salt to the soup.
A. a B. an C. a few D. a little
四、改错题
9. How a lovely dog! （找出错误并改正）
10.First, you peel the potatoes. Then, cut it into pieces. （找出错误并改正）
参考答案：
1.What 2. How 3. How
4.Cut（祈使句用动词原形）
5.Don’t pour（否定祈使句）
6.add（步骤描述用动词原形）
7.B（What do you think of... 固定句型）
8.D（salt 不可数，用 a little 修饰）
9. How a lovely dog! → What a lovely dog!（中心词是名词 dog）
10. it → them（指代复数 potatoes）Unit 6 Plan for Yourself 知识框架速览
本单元是一般将来时（be going to）的专项突破，主题围绕“人生规划与职业理想”。重点在于掌握谈论未来打算、制定计划（如新年决心）的核心句型，并学会区分 be going to与 will的用法差异。
1. 核心词汇
职业名称：engineer（工程师）, programmer（程序员）, scientist（科学家）, pilot（飞行员）, photographer（摄影师）, lawyer（律师）, director（导演）
规划动作：plan（计划）, decide（决定）, promise（承诺）, practice（练习）, improve（改进）, stick to（坚持）
高频短语：grow up（长大）, make sure（确保）, try one’s best（尽力）, keep on doing（继续做）, be tired of（厌倦）, realize one’s dream（实现梦想）
2. 关键句型
询问理想：What do you want to be when you grow up — I want to be an engineer.
谈论计划：How are you going to do that — I’m going to study computer science.
制定决心：What’s your New Year’s resolution — I’m going to learn a new language.
3. 语法聚焦
be going to 结构：表示计划、打算或有迹象表明要发生的事情。
构成：am/is/are + going to + 动词原形
例句：She is going to visit her grandma next week.
时间状语：next week, tomorrow, in the future, this weekend
与 will 的区别：be going to强调事先有计划；will强调临时决定或意愿。
高频易错点解析
易错点1：be going to 后误用动词-ing 形式
错误案例：I am going to studying math hard.（受前面 going 的影响误加 ing）
正确形式：I am going to study math hard.
避坑指南：be going to是固定结构，to 是不定式符号，后面必须接动词原形，绝不能因为前面有 going 就误用动名词。
易错点2：混淆 want to be 与 be going to be
错误案例：I want to a doctor.（want to 后缺少动词）
正确形式：I want to be a doctor. / I’m going to be a doctor.
避坑指南：want to表示“想要”，后面必须接动词原形（be）；be going to表示“打算成为”，结构完整。两者都需保留动词 be。
易错点3：时间状语与主谓一致错误
错误案例：She are going to play basketball last week.（时态与时间矛盾）
正确形式：She is going to play basketball next week.
避坑指南：be going to表示将来，时间状语必须是将来时间（如 tomorrow, next year）。同时注意主谓一致：She/He/It + is，I + am，You/We/They + are。
典型习题精练
一、用所给词的适当形式填空
1. They are going to ________ (play) soccer this weekend.
2. What does your sister want ________ (be) when she grows up
3.My resolution is ________ (read) more books.
二、单项选择
4.—______ are you going to become a writer —I’m going to keep on writing stories.
A. What B. How C. When D. Why
5. My brother ______ going to study abroad next year.
A. am B. is C. are D. be
6. —What’s your plan for the holiday —I ______ visit my grandparents.
A. go to B. goes to C. am going to D. going to
三、改错题
We are going to playing basketball after school.（找出错误并改正）
He want to be an artist in the future.（找出错误并改正）
参考答案：
play (be going to 后接动词原形)
to be (want to do 固定搭配)
to read (is to read 表计划)
B (询问方式用 How)
B (brother 是单数，用 is)
C (be going to 表示计划)
playing → play (to 后接动词原形)
want → wants (主语 He 是第三人称单数)Unit 7 When Tomorrow Comes 知识框架速览
本单元是一般将来时（will）的专项突破，主题围绕“未来预测与科技生活”。重点在于掌握用 will对未来进行预测、描述科技发展（AI、太空生活）的核心表达，并学会区分 will与 be going to的细微差异。
1. 核心词汇
未来科技：AI (artificial intelligence), robot, outer space（外太空）, smart refrigerator（智能冰箱）, service robot（服务机器人）, technology, transport system
预测与态度：prediction（预测）, climate change（气候变化）, positive（乐观的）, be able to（能够）, solve the food problem（解决食物问题）
高频短语：come true（实现）, take over（接管）, in the future（在未来）, live to be 100 years old（活到100岁）, be interested in（对...感兴趣）
2. 关键句型
询问未来：What will the future be like — I think there will be more robots.
能力预测：Will people be able to live on Mars — Yes, they will. / No, they won't.
主观看法：I'm quite positive about the future.（我对未来很乐观。）
3. 语法聚焦
will 结构：表示将来发生的动作或对未来的预测（无事先计划）。
构成：主语 + will + 动词原形（will 无人称和数变化）
否定：will not → won't
疑问：Will + 主语 + 动词原形？
时间状语：in 100 years（100年后）, in the future, tomorrow, next week
There be 将来时：There will be + 名词（将会有...）
高频易错点解析
易错点1：will 后误加 to 或动词变形
错误案例：People will to live longer. / She will goes to space.
正确形式：People will live longer. / She will go to space.
避坑指南：will是助动词，后面必须直接接动词原形，绝不能加 to，也不能受主语影响改变动词形式（如 goes, lives）。口诀：will 后面跟原形。
易错点2：混淆 be able to 与 can 的将来时
错误案例：In the future, robots can to do everything.（将来时态下 can 后误加 to）
正确形式：In the future, robots will be able to do everything.
避坑指南：can只有现在时和过去时（could），没有将来时形式。表示“将来能够”做某事，必须使用 will be able to。
易错点3：There be 句型的将来时结构错误
错误案例：There will have more cars in the future.（受中文“将有”影响）
正确形式：There will be more cars in the future.
避坑指南：There be句型表示“存在有”，其将来时结构固定为 There will be，绝不能用 have 或 has 替换 be。
典型习题精练
一、用所给词的适当形式填空
1. I think people ________ (live) on the moon in 50 years.
2.—________ you ________ (be) a doctor in the future —Yes, I will.
3.There ________ (be) less pollution if we use more clean energy.
二、单项选择
4.—______ will the future be like —Maybe there will be no traffic jams.
A. How B. What C. When D. Where
5. My brother ______ be able to drive a car next year because he will be 18.
A. can B. is C. will D. does
6.—Will there be more schools in this town —No, ______.
A. there will B. there won't C. they will D. they won't
三、改错题
7.They will goes to the science museum tomorrow.（找出错误并改正）
8.There will has a big concert next weekend.（找出错误并改正）
参考答案：
1.will live (will + 动词原形)
2.Will, be (一般疑问句结构)
3. will be (There will be 固定结构)
4. B (What ... be like 询问“什么样”)
5. C (next year 是将来时间，用 will be able to)
6.B (There be 句型的否定回答)
7.goes → go (will 后接动词原形)
8. has → be (There will be 结构)Unit 8 Let's Communicate! 知识框架速览
本单元是人际沟通主题与if 真实条件句（主将从现）的语法专项。重点在于掌握不同沟通方式的表达，并学会用 if从句提出建议、预测结果，同时巩固提建议的多种句型。
1. 核心词汇
沟通方式：communicate (v.), communication (n.), face to face, text message, video call, email, body language, gesture (手势), expression (表情)
沟通行为：argue (争吵), understand, explain, listen carefully, pay attention to, make friends, make up (和好)
态度品质：honest (诚实的), sincere (真诚的), nervous (紧张的), calm (冷静的), patient (耐心的)
2. 关键句型
询问方式：How do you communicate with your friends — I usually send text messages.
提建议：If you want to solve the problem, you should talk face to face.
预测结果：If you listen carefully, you will understand others better.
3. 语法聚焦
if 真实条件句（主将从现）：
结构：If + 一般现在时（从句）, 主语 + will/情态动词/祈使句（主句）
功能：表示在某种条件下，可能发生的结果。例句：If it rains tomorrow, we will stay at home. / If you see him, tell him to call me.
提建议句型：You should... / Why don't you... / How about... / It's a good idea to...
高频易错点解析
易错点1：if 条件句中的“主将从现”时态误用
错误案例：If it will rain tomorrow, we will stay at home. (在 if 从句中误用 will)
正确形式：If it rains tomorrow, we will stay at home.
避坑指南：在 if 引导的真实条件句中，从句（if 部分）必须用一般现在时表示将来，主句用 will 或其他将来时形式。口诀：主将从现。
易错点2：communicate 及物与不及物用法混淆
错误案例：We should communicate our ideas. (正确，但学生常漏掉 with)
错误案例：We should communicate with each other. (正确，但学生常误加宾语)
避坑指南：communicate作“交流信息”解时是及物动词，直接接宾语（communicate ideas）；作“与某人沟通”解时是不及物动词，必须加 with（communicate with sb.）。
易错点3：提建议句型结构混乱
错误案例：How about to talk face to face (about 后误用 to do)
正确形式：How about talking face to face
避坑指南：How about/ What about后必须接 动词-ing 形式 或名词；Why don't you后接 动词原形；You should后接 动词原形。需严格区分。
典型习题精练
一、用所给词的适当形式填空（if 条件句）
1. If you ________ (work) hard, you ________ (pass) the exam.
2. Please call me if you ________ (need) any help.
3. If he ________ (not come) on time, we will start without him.
二、单项选择
4. —______ do you usually keep in touch with your pen pal —______ sending emails.
A. How; By B. What; By C. How; With D. What; With
5. If you ______ with your friend, you should say sorry first.
A. will argue B. argue C. argued D. are arguing
6. —I feel nervous when I talk to strangers. —______ join an English club to practice
A. Why don't B. Why not you C. How about D. What about
三、改错题
7.If it will be sunny tomorrow, we will go hiking. (找出错误并改正)
8.How about to have a face-to-face talk (找出错误并改正)
参考答案：
1.work, will pass (主将从现)
2.need (主将从现)
doesn't come (主将从现，第三人称单数)
4.A (How 问方式，By 表示通过某种手段)
5. B (if 条件句用一般现在时)
6. A (Why not + 动词原形；Why don't you + 动词原形)
7. will be → is (if 从句中不能用 will)
8. to have → having (How about + doing)

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