外研版高中英語必修4 module 5《a trip along the three gorges》（grammar2）課件-全文預(yù)覽
【正文】 get there on time. Grammar3. Observation(2ms) 語氣 強(qiáng) 弱 表不可能 (推測(cè) ) can’t, couldn’t may not, might not 否定句 ?She can’t be serious. ?We couldn’t have done better. ?People may not pick flowers in this garden. ?She was afraid they might not like the idea. Grammar4. Observation(2ms) mustn’t, shouldn’t had better not 表禁止 ?We mustn’t waste our time. ?They shouldn’t leave so soon. ?You’d better not disturb him. Grammar5. Observation(2ms) should, must have to 表義務(wù) (應(yīng)該 ) 有時(shí)態(tài)變化 Grammar6. Observation(3ms) ?You should do what your parents tell you. ?If you can’t finish the book by then, you must e and renew it. ?This is a lovely party, but we have to go because of the babysister. ?The bridge was not wide enough so that somebody had to give way. 1. 表示否定的情態(tài)動(dòng)詞的用法 : 部分情態(tài)動(dòng)詞的否定式是情態(tài)動(dòng)詞中的考點(diǎn)之一。 她不得不輟學(xué)了 。 Could you tell me how to get to the airport? 您能告訴我怎么去機(jī)場(chǎng)嗎？ can表示偶爾出現(xiàn)的事實(shí)。 例如： Everyone was able to escape when the earthquake happened. 地震發(fā)生時(shí)，大家都設(shè)法逃了出去。 ? Two eyes can see more than one. ? I am so strong that I can lift this stone. ? He said that Jack couldn’t finish his work in such a short time. ? Could you follow my step? ? He is only four, but he is able to read. ? She was able to do it without my help. ? Will you be able to e to my party tomorrow? 表能力 can could be able to 有時(shí)態(tài)變化 Grammar1. Observation(3ms) 二、
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