【导语】英语语法让很多学生都头疼，因为复杂难懂的句式和词组有时难以记忆。英语网为大家整理了英语语法大全，希望对同学们的英语语法学习有所帮助。更多内容尽在英语网。
将以下祈使句改为否定式：
1. Come here early. 2. Ask him.
3. Please wait for her.
4. Read the book carefully.
5. Sit under the tree, please.
6. Lets go there together.
二、选择最佳答案填空：
1. If you are tired, ______ a rest.
A. have B. having C. to have D. had
2. ______ me go. It is very important for me.
A. Do let B. let do C. Doing let D. To do let
3. He is not honest. ______ believe him.
A. Not B. Dont C. To not D. Not to
4. If you want to stay, let me know, ______?
A. will you B. shall we C. do you D. do we
5. Never come late again, ______?
A. will you B. wont C. do you D. does he
6. _____ up early tomorrow, or you cant catch the train.
A. Getting B. Get C. To get D. Got
7. _____ in the street. Its dangerous.
A. Not play B. Not to play C. Dont play D. Dont to play
8. Please ______ me some money, will you?
A. lend B. lending C. to lend D. be lend
9. The film is about to begin. Please ______ seated.
A. be B. are C. is D. being
10. _____ the boxes. You may use them later.
A. Keep B. Keeping C. To keep D. Kept
答案请看第二页
【参考答案】
一、1. Dont come here early.
2. Dont ask him.
3. Please dont wait for her.
4. Dont read the book carefully.
5. Dont sit under the tree, please.
6. Dont lets go there together. / Lets dont go there together.
二、1.5. AABAA 6.10. BCAAA