人教版高中英語必修三unit2healthyeatingperiod2課件(編輯修改稿)
2024-12-24 01:03 本頁面
【文章內(nèi)容簡介】 tch the first train. ? We missed the bus so we had to walk home. ? We have to overe all kinds of difficulties. ? Have to 有多種時態(tài)。常見的有： ? 一般將來時 ? We will have to gather at the school gate at 7 tomorrow. ? 一般現(xiàn)在時 ? I have to take more money with me because my girlfriend has so much to buy. ? 一般過去時 ? Finally, we had to give up our idea to hold a piic outside as it rained for a whole afternoon. have to （考點） ?Must they do…? Yes, they must. No, they needn’t/don’t have to. must amp。 have to must have to 主觀／客觀 主觀 客觀 時態(tài) 現(xiàn)在，將來 多種 表推測 √ 詢問意愿 √ 否定意 禁止，不允許 不必 ? must表主觀意志，而 have to表由于客觀因素不得不做完成的事情。 ? Must沒有過去式，除在間接引語中可表示過去的時間。在直接引語中表示過去的時間用had to代替。 ? I told her that she must give up smoking. ? She said, “We had to get everything ready that night.” 比較 must amp。 have to Need I do …? Yes, you must. No, you needn’t. dare amp。 need 情態(tài)動詞 實義動詞 dare 否，疑，條 dare not do 否 ,疑 don’t dare to do don’t dare do 不用于肯定句 肯： dare to do need 否，疑 needn’t do (don’t) need sth (don’t) need to do 肯： must, have to, ought to, should 注意對 need問句的回答 : Need I finish the work today? Yes, ________________. No, ________________. No, ________________. you must you needn’t you don’t have to needn’t 對其它情態(tài)動詞的回答 : Shall I tell John about it?
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