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Unit 5 Wild Animals
Grammar知识点清单
第一部分 Grammar A：动词 + to-infinitive 动词不定式作宾语
一、核心语法规则
大量动词后必须接 to do（动词不定式） 作宾语，结构：主语 + 动词 + to do sth.
1. 课本高频接 to-do 的动词清单
start, like, want, try, decide, learn, plan, prepare, choose, fail, remember, forget, agree
2. 课文例句
The pandas started to come out of their home.
熊猫开始走出居所。
He began to eat bamboo for breakfast.
它开始吃竹子当早餐。
He tried to exercise. 它尝试活动。
He decided to climb a tree. 它决定爬树。
She likes to eat apples. 她喜欢吃苹果。
She does not want to move around. 她不想四处走动。
She often fails to get down. 她经常下不来树。
3. 否定结构
主语 + 动词 + not to do sth.
She doesn’t want to move around.
第二部分 Grammar B：to-infinitive 表目的（to do /in order to do）
一、用法规则
to-infinitive 放在句末，用来表示动作的目的，译为 “为了……”；
正式书面可替换为 in order to do，含义完全相同。
课文例句
We prepare all kinds of food to give her a healthy diet.
= We prepare all kinds of food in order to give her a healthy diet.
我们准备各类食物，为了给它均衡健康的饮食。
We buy toys to make her happy. 我们买玩具哄它开心。
We plan to give her gifts to celebrate her birthday.
我们准备送礼物庆祝它的生日。
B1 动物习性目的匹配核心短语
Eagles use eyes to find small animals. 鹰用眼睛寻找猎物
Whales make sounds to talk to each other. 鲸鱼发声互相交流
Tigers hunt to feed babies. 老虎捕猎喂养幼崽
Zebras live in groups in order to stay safe. 斑马群居保障安全
Baby animals watch parents to learn hunting skills. 幼崽观摩父母学习捕猎
第三部分 Grammar C：动词 + 宾语 + 不带 to / 带 to 不定式
一、分两类固定结构
类型 1：使役 / 感官动词 + 宾语 + 动词原形（不带 to）
单词：make, let, see, hear
结构：make /let/see /hear + sb. + do sth.
例句：
They made us all laugh. 它们逗得我们大笑。
I saw a baby lion stay near its mum. 我看见小狮子待在妈妈身边。
We heard some birds sing in the trees. 我们听见鸟儿在树上歌唱。
类型 2：指令 / 劝说类动词 + 宾语 + to do（必须带 to）
单词：tell, ask, want, invite, advise, order, encourage
结构：tell/ask/want sb. to do sth.
否定：tell/ask/want sb. not to do sth.
例句：
Mr Wu asked us not to feed animals. 吴老师要求我们不要投喂动物。
It helped us (to) understand the importance. help 后 to 可省略。
二、必考易错点
make/let/see/hear 主动语态后面不加 to；被动语态必须加 to
We made him laugh. → He was made to laugh.
help 两种均可：help sb. do /help sb. to do
否定全部在 to 前加 not：ask sb. not to do
第四部分 Word power：名词后缀 -ing /-ness/-ion
一、三大后缀构词规则
-ing：动词变动名词，表 “行为、含义”
mean → meaning；meet → meeting；feel → feeling
-ness：形容词变名词，表 “性质、状态”
ill → illness；happy → happiness；sad → sadness；kind → kindness；dark → darkness
-ion：动词变名词，表 “动作、活动”，常变形词尾
act → action；protect → protection；invite → invitation；decide → decision；express → expression；celebrate → celebration；introduce → introduction
二、A 部分单词变形汇总
express → expression
celebrate → celebration
protect → protection
begin → beginning
kind → kindness
dark → darkness
sick → sickness
meet → meeting
feel → feeling
introduce → introduction
三、书信完形填空核心变形（B 板块）
hunt → hunting 捕猎（动名词）
protect → protection n. 保护
feel → feeling n. 感受
happy → happiness 快乐
sad → sadness 悲伤
invite → invitation 邀请
kind → kindness 善意
四、写作加分固定搭配
in danger because of hunting 因捕猎濒临危险
need our protection 需要我们的保护
feelings of happiness and sadness 喜悦与悲伤的情绪
accept our invitation 接受我们的邀请
thank you for your kindness 感谢你的善意
五、三大语法板块综合易错汇总
to do 作宾语 vs to do 表目的区分
I want to feed pandas.（宾语：想要做）
I get bamboo to feed pandas.（目的：拿竹子为了喂熊猫）
不带 to 动词仅限 make/let/see/hear，其余动词一律加 to
in order to 后只能加动词原形，不能加 doing
后缀区分记忆
-ing：动作 / 含义；-ness：形容词变状态；-ion：动作类名词
fail to do 固定搭配：未能做某事，不可说 fail doing
六、单元写作万能句型（动物园 / 野生动物作文）
I decided to go to the zoo to watch giant pandas.
我决定去动物园看大熊猫。（to do 宾语 + to do 表目的）
The keeper asked us not to get close to dangerous animals.
饲养员要求我们不要靠近危险动物。
We heard monkeys jump and sing in the trees.
我们听见猴子在树上跳跃鸣叫。
We take action to protect wild animals because they need our protection.
我们采取行动保护野生动物，因为它们需要我们的保护。

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