人教版高中英语必修三unit2healthyeatinggrammar课件

人教版高中英语必修三unit2healthyeatinggrammar课件内容摘要：

A. will B. could C. can D. might 3. 表示“请求”的情态动词的用法 will / would, shall/should * 均可表示将来。 过去时为 should, would. * will, would 可 表示意愿、常出现的动作。 在疑问句中表示请求和建议 . must, could , may, might, can’t “推测，可能性”的情态动词 can 表示推测时，只能用在 否定句或疑问句中。 It’s so late. Can Tom be reading? 这么晚了，汤姆还在看书吗。 这个人不可能是玛丽， 她生病了。 It couldn’t be Mary. She had fallen ill. 情态动词能表示时态吗。 1. 表示对现在的推测 2. 表示对过去的推测 表示推测 —— 情态动词的重要用法 肯定的推测 可能的推测 否定的推测 疑问的推测 must 对将来 对现在 对过去 情态动词 may, might can’t, couldn’t can, could + V. + V. + have done 常见 must be + be doing + V. + V. + have done + be doing 可以用 not表示“可能不” +V. + V. + have done + be doing + V. + V. + have done + be doing You look tired. You _______ go to bed now. should You _______________ believe everything you read on the Inter. shouldn’t/can’t My mother cooked a lot of food for me. She has been cooking all the morning. She must be tired now. I have just eaten a lot of food for lunch. You can’t be hungry now. My house is near the railway. It ____ be noisy there. must The old restaurant ______ be very good. It’s always full of people. The new restaurant ______ be very good. It’s always empty. must can’t Where is Jane? Perhaps she is reading newspapers. =She ________________ (read) newspaper. may be reading I。