北師大版英語(yǔ)八下《unit 12 western china》（part 2）-全文預(yù)覽
【正文】 1. 介詞 in 的使用 2. 情態(tài)動(dòng)詞的使用 3. 課文解析 三 . 具體內(nèi)容 : （一） in 的使用 1. 表示所處方位： A） at, in 表示在某地時(shí)， at 后接小地方， in 后接大地方。 I’ll have to go with her tomorrow. Yesterday it rained heavily when school was over. We had to stay in our classroom. 3. 用于否定句中時(shí)，兩者意思有很大的不同。 It amazed us to hear that you were leaving We were amazed to hear that you were leaving. 聽(tīng)到你要走，我們都大吃一驚。 n. discovery 3. reflect —— v. to throw back The mirror reflects my face. 鏡子照出我的臉。 He gave her an admiring look. 他向她投以贊賞的一瞥。 —— to express, make clear, show His behaviour reflects his lazy attitude to work. 他的行為反映了他對(duì)待工作的懶惰態(tài)度。 2. discover —— v. to find (something that already existed but was not known about before) Columbus discovered America in 1492. 哥倫布于 1492年發(fā)現(xiàn)美洲。 . You mustn’t smoke in the classroom. You don’t have to worry about his studies. —— Must I hand in my exercise book now, Mr. Zhao? —— No, you needn’t . You may give it to me tomorrow. 4. must 可用于一種較為肯定的推測(cè)或推斷，常用于肯定句中，意為“一定要，肯定”，而 have to 沒(méi)有此用法。 1. 兩者都可以表示“必須”， 但 must強(qiáng)調(diào)主觀(guān)上認(rèn)為有義務(wù)，有必要；而 have to著重于表示客觀(guān)上的需要，含有“不得不”的意味。 . When did you arrive at
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