牛津譯林版高中英語必修四unit2sportingeventsgrammarandusage課件-免費(fèi)閱讀
【正文】 在疑問句中用于第二、三人稱表示意愿。如： ? We should／ ought to help each other and learn from each other in our work． ? You shouldn’t spend so much time playing. ? She is your mother, so you ought to support her． ? Ought he to go? Yes, I think he ought (to). have to / must obligation ? must與 have to都可以表示“必須”的意思，但要注意以下兩點(diǎn)區(qū)別。牛津高中英語 (模塊四 ? 1) must只有現(xiàn)在時(shí)，而 have to有現(xiàn)在時(shí)、過去時(shí)和將來時(shí)。如： Will you go hiking with me in the mountain? Will he pay for me? If you will listen to me, I’ll give you some advice on how to learn English． If you will e this way, the manager will meet you． shall / will mustn’t / needn’t ? mustn’t 解釋為“不準(zhǔn)，不許”，語氣強(qiáng)烈；needn’t “不需要，沒必要”，語氣緩和。如： Shall she go to the concert with us this evening? (征求意見 ) You shall go to the front at once． (命令 ) Don’t worry． You shall get the answer this very afternoon． （允諾） He shall be sorry one day． I tell you． (警告 ) Nothing shall stop us from fighting against pollution． (決心 ) shall / will will在肯定句中表示意愿或決心時(shí)，是可以用于條件狀語從句的。 ought to則更多反映客觀情況，在談到法律、義務(wù)和規(guī)定時(shí)使用。高一下學(xué)期 ) Grammar and usage Unit 2 Sporting events Modal verbs 課件描述： 通過對情態(tài)動(dòng)詞的介紹來幫助學(xué)生學(xué)習(xí)掌握情態(tài)動(dòng)詞。如： ? We must work hard, or we’ll fail in the examination． ? Two years ago, the poor girl had to leave school for lack of money． ?2) must表示主觀看法， have to則側(cè)重于客觀需要。 ? You mustn’t miss
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