高一英語必修3第2單元第5課時導學案
8. you _________________ (本不該過著貧窮的生活). (ought)
v. 語法專練
a. ought to
1. he ought to help his brother work out the problem. (改成否定句)
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2.tom ought to go to have a rest. （改成一般疑問句）
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3.such things ought to be done at once, _____________？（反意問句）
b. 用must, have to, can, ought to, used to和be able to 的適當形式填空。
1. in some parts of the world, you ______boil the water before drinking it.
2. the bus caught fire seriously, but the passengers ¬¬¬¬______escape from it.
3. he ______have stayed at home this morning. i saw him shopping in another city.
4. you ______ smoke in this part of the hospital.
5. you ______keep a simple first aid box at home for any accidents.
6. if she is completely well, she ______be back at school today.
7. my father ______be a heavy smoker, but now he has given up the habit.
8. ------you ______have finished the article. the deadline is last friday.
------sorry. i have been busy these days. could you give me 3 days more?
9. she ______ breathe, so i used the mouth-to-mouth way.
10. he ______have caught a bad cold last night, for his forehead felt burning.