Unit 2Healthy eating GrammarGrammar 基础调研基础调研语篇提能语篇提能作业目标 通过练习掌握 ought to have done/ought to do/needn't have done 等情态动词的不同含义和用法。 作业设计 限时：40 分钟 基础调研 Ⅰ.从括号内选择合适的情态动词填空 1．You ________ (shouldn't, don't have to) pay with cash. You can use a credit card. 2．If you earn more than 3,500 yuan in China, you ________ (have to, ought to) pay tax. 3．You ________ (should, would) eat more fruit and vegetables. 4．You ________ (shouldn't, needn't) eat so much junk food. 5．I ________ (can't, needn't) afford to eat in a restaurant every day. 答案：don't have to 答案：have to 答案：should 答案：shouldn't 答案：can't 6．The teacher says we ________ (can't, don't have to) use our books during a test. 7．Drivers ________ (don't have to, mustn't) go through red lights. 8．They ________ (have to, ought to) win — they've trained hard enough. 9．You ________ (needn't, oughtn't to) have come in person; a telephone would have been enough. 10．You ________ (oughtn't to, won't) drive if you're tired. 答案：can't 答案：mustn't 答案：ought to 答案：needn't 答案：oughtn't to Ⅱ.单句语法填空 1．— Sorry, Professor Smith. I didn't finish the paper yesterday. — Oh, you ________ (do) it as yesterday was the deadline. 2．Since he could easily finish the work himself, he ________(not, ask) his friends for help. 3．— I wonder why Mr. Green hasn't showed up at the meeting yet. — I'm not sure, but he might ________(stick) in a traffic jam driving here. 答案：should have done 答案：needn't have asked 答案：have been stuck 4．The bus has gone. We ________(arrive) a little earlier. 5．I ________(enjoy) myself more — it was a perfect day. 6．I ________thank you too much for all yo...
