初中祈使句类型及练习
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●肯定结构:
1. Do型(即:动词原形(+宾语)+其它成分)。如:Please have a seat here. 请这边坐。
有的祈使句在意思明确的情况下,动词可省略。如:This way, please. = Go this way, pleas
e. 请这边走。
2. Be型(即:Be + 表语(名词或形容词)+其它成分)。如:Be a good boy! 要做一个好孩子!
3. Let型(即:Let + 宾语+ 动词原形+ 其它成分)。如:Let me help you. 让我来帮你。
●否定结构:
1. Do型和Be型的否定式都是在句首加don't构成。如:Don't forget me! 不要忘记我!
Don't be late for school! 上学不要迟到!
2. Let型的否定式有两种:“Don't + let + 宾语+ 动词原形+ 其它成分”和“Let + 宾语+ not + 动词原形+ 其它成分”。如:Don't let him go. / Let him not go. 别让他走。
3. 有些可用no开头,用来表示禁止性的祈使句。如:No smoking! 禁止吸烟!No fishing! 禁止钓鱼! 表示禁止时，尤其是标语等也可用“No+名词／动名词”来表示。
No parking!
No entry!
No litter!
"Let"后头除了是不带"to"的不定式动词(The infinitive without"to")之外，还可以是某些适当的副词，如out, in, down, alone等：
(13) Let the puppy out.
(14) Open the windows and let the fresh air in.
祈使句专项练习
一、用括号内所给动词的适当形式填空。
1. __________ (not, be )late.
2. ____________ (dust) the dressing table.
3. ____________ (not, speak) with your mouth full of food.
4. ____________ ( not, talk) and ____________ (read) a book.
5. Open the window and ____________ (shut) the door.
6. Let’s ____________ (sweep) the floor.
二、选择填空
( )1 .The doctor says: “________ work so hard”
A Stop
B Don’t
C Can’t
D No ( )2. ________ in bed. It’s bad for your eyes.
A Not to read
B Don’t read
C Don’t to read
D Not read ( )3.Please ________ look outside. Look at the blackboard.
A not
B don’t
C aren’t
D can’t ( ) 4. The TV is too loud. Please________.
A. turn it down
B. to turn it down
C. turn down it
D. to turn down it ( )5. Kate, _______ your homework here tomorrow.
A. bring
B. brings
C. to bring
D. bringing
( )6. ________ me the truth, or I'll be angry.
A. Telling
B. To tell
C. Told
D. Tell
( )7. ________ careful!
A.Be
B. Being
C. To be
D. To
( )8. Don't _______ in the river.
A. swim
B. swimming
C. swam
D. swims
三、句型转换
1. Will you please read it again more slowly? （改为祈使句）
_____ _____ again more slowly, please.
2. Please sit next to Nancy. （改为否定句）
_____ _______ ______ next to Nancy.
3. Come to my house tomorrow. （改为否定句）
_____ come to my house tomorrow.
4. Wear the glasses! （改为否定句）
______ wear the glasses!
5. Don’t wash your hands!(改成肯定句)
_______ your hands!
四．将以下祈使句改为否定式：
1. Come here early.
2.Ask him.
3. Please wait for her.
4.Let’s go there together.