资源简介

新人教版七年级英语下Unit2 No Rules，No orders 语法聚集及练习
一、情态动词(can、have to、must)
1. can
(1)can的基本用法
①表示能力，意为“能;会”。
②表示请求或许可，意为“可以”。
③表示推测，意为“可能”，常用于否定句和疑问句中。
(2)can构成的各种句式及其结构
句式 句式结构
肯定句 主语+can+动词原形+其他，
否定句 主语+can't+动词原形+其他
一般疑问句 Can+主语+动词原形+其他
肯定回答:Yes,主语+can.
否定回答:No，主语+can't.
2. have to
(1)意为“不得不;必须”，后接动词原形，表示客观需要做的事情。
(2) have to有人称、数和时态的变化，其第三人称单数形式为has to。
(3)含有have to或has to的句子需要分别借助动词do或does构成疑问句或否定句。
3. must
(1)意为“必须”时，表示主观的义务或必要，无人称、数和时态的变化。以must开头的一般疑问句，肯定回答一般用must,否定回答一般用needn't或don't/doesn't have to，意为“不必”，而mustn’t意为“禁止”，常用于否定句中。
(2)意为“一定”时，表示肯定推测，用于肯定句中。
二、祈使句
用来表示请求、命令、劝告、叮嘱、希望、禁止等的句子叫祈使句。
1.祈使句的特点
(1)祈使句一般没有主语，说话的对象通常都是第二人称“你”或“你们”，所以也可以理解为省略了主语you。
(2)以动词原形开头，无时态和数的变化。
(3)祈使句的否定形式是在动词原形前加 don't。
(4)在表达请求时，可以加上please，句末一般用句号;表示比较强烈的语气时，可用感叹号。
2.祈使句的类型及句式结构
类型 句式结构
Do型 肯定:动词原形(+其他成分)
否定:Don’t+动词原形(+其他成分).
Be型 肯定:Be+表语(+其他成分).
否定:Don't+be+表语(+其他成分).
Let型 肯定:Let+宾语+动词原形(+其他成分).
否定:①Don't let+宾语+动词原形(+其 ②Let+宾语+not+动词原形(+其他成分).
No型 No+名词/动词-ing形式
祈使句用法歌诀
祈使句，祈使句，请求、命令或建议。
主语是 you 常省去，动词原形开头记。
否定形式要注意，句首要把 Don't加。
要讲客气用 please，句首、句末没关系。
综合练习
一、单项选择题
1．—________put your books here，Rose.
—OK，mom.
A．Doesn't B．No C．Don't D．Can't
2． ____ late for class!
A．Don't B．Not be C．Don't be D．Not
3． Tom, ____ afraid of speaking in front of people. You are a shining star.
A．don't B．not be C．don't be D．not to be
4．—Jack, ____ run in the hallways. It's very dangerous.
—Sorry. I won't, Mr. Black.
A．don't B．doesn't C．can't D．won't
5．Tom, ____ listen to music. We are having class now.
A．don't B．not C．can't D．no
6． 一Tom, ____feed your food to the giraffes. It's not good for them.
一I see, Mom.
A．don't B．doesn't C．no D．not
7． —____I park my car here
—I'm afraid you ____. Look at the sign" No parking! "
A．Need; couldn't B．May; can't
C．Can; needn't D．Could; couldn't
8． —Must I park my car behind the building
—No, you ____. You ____ park it here.
A．mustn't; need B．don't have to; may
C．may not; must D．needn't; must
9．— May I use your computer, Mr. Black
— ____. I will use my iPad instead.
A．I'm afraid not B．Sorry, you can't
C．Thank you D．Go ahead
10． ____ shy, or you can't make any new friends in this school.
A．Be B．Don't be C．No be D．Don't
11． —Don't run in the hallways! It's dangerous!
—____.
A．Of course, I do B．Of course, I will
C．Sorry, I don't D．Sorry, I won't
12． —May I ask you a question, please
—Sorry, I'm afraid you ____.
A．can't B．can C．may D．needn't
13．— ____ late for class again, Tom.
— Sorry, Ms. Wang.
A．Don't B．Don't be C．Can't
14． — Peter, ____ in the library.
—I'm sorry. I won't do it next time.
A．not play B．no play C．don't play D．play
15． — ____ silent, please! You are in the library.
—I'm sorry, madam.
A．Keep B．To keep C．Keeping
16． — ____ run in the hallways.
— Sorry, Mr. Wang.
A．Don't B．Doesn't C．Didn't D．Isn't
17． — ____I take a seat here
— No, you can't. The seats are only for the old and children.
A．May B．Must C．Will D．Should
18． —Kate, don't ____! They are your friends.
—All right.
A．shy B．to shy C．be shy D．is shy
19． — ____ in class.
— Sorry. I won't do it again next time.
A．Eat B．Do eat C．Not eat D．Don't eat
20． ____ these pictures in new order, please.
A．Put B．To put C．Putting D．Puts
二、句型转换
21． You mustn't throw litter around.(改为同义句)
　 　　 　 litter around.
22． You can't go out on school nights. (改为祈使句)
　 　　 　 out on school nights.
23． We mustn't fish here.（保持基本句意不变）
　 　　 　 here.
24． Run in the hallways.（改为否定句）
　 　　 　 in the hallways.
25． We can't run in the classroom. （改为否定祈使句）
　 　　 　in the classroom!
26． —You can't eat in the classroom. (改为祈使句)
—　 　in the classroom.
27． You should never drive after drinking.(改为祈使句）
　 　　 　 after drinking!
28． Do your homework after school.(改为否定句）
　 　　 　 your homework after school.
29． You must never play in the street.(改为同义句）
　 　　 　 in the street.
30．Open the windows, please.（改为否定句）
　 　　 　 the windows, please.
参考答案
1．【答案】C
2．【答案】C
3．【答案】C
4．【答案】A
5．【答案】A
6．【答案】A
7．【答案】B
8．【答案】B
9．【答案】D
10．【答案】B
11．【答案】D
12．【答案】A
13．【答案】B
14．【答案】C
15．【答案】A
16．【答案】A
17．【答案】A
18．【答案】C
19．【答案】D
20．【答案】A
21．【答案】Don't；throw
22．【答案】Don't；go
23．【答案】Don't；fish / No fishing
24．【答案】Don't；run
25．【答案】Don't；run．
26．【答案】Don't eat
27．【答案】Don't；drive
28．【答案】Don't；do
29．【答案】Don't/Never；play
30．【答案】Don't；open

展开更多......

收起↑