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大努力,他會(huì)做好的。does做,第三人稱單數(shù)形式;will do將會(huì)做,一般將來時(shí)態(tài);will try將會(huì)努力,一般將來時(shí)態(tài);tries一般現(xiàn)在時(shí)態(tài),第三人稱單數(shù)形式。根據(jù)句意可知,第一句話中if是“是否”,引導(dǎo)賓語從句,從句中有tomorrow,表示將來的事情,故用一般將來時(shí)態(tài)will do;第二句話if是“如果”,引導(dǎo)條件狀語從句,從句中用一般現(xiàn)在時(shí),主句用一般將來時(shí)態(tài),主語是he第三人稱單數(shù),故用tries。選B。13.-Have you washed the clothes? -Not yet. But I _________ them in half an hour.A.washed B.have washed C.will wash D.wash【答案】C【解析】句意:——你洗衣服了嗎?——還沒有。但我半小時(shí)以后就洗。In half an hour半小時(shí)后,表示的是將來時(shí)間。故選C。14.—Linda is not ing for the party tonight. —But she _.A.promises B.promised C.will promise D.had promised【答案】B【解析】【詳解】句意:琳達(dá)今晚不來參加晚會(huì)了嗎?但她答應(yīng)了。考查動(dòng)詞時(shí)態(tài)。A. promises一般現(xiàn)在時(shí),第三人稱單數(shù);B. promised一般過去時(shí);C. will promise一般將來時(shí);D. had promised過去完成時(shí)。根據(jù)上文是現(xiàn)在進(jìn)行時(shí),結(jié)合語境可知原先答應(yīng),可知用一般過去時(shí)。故選B。15.This medicine _______ millions of people’s lives since it was put into use.A.is saving B.will save C.has saved D.had saved【答案】C【解析】句意:這種藥物自從投入使用以來已經(jīng)挽救了數(shù)百萬人的生命。since后跟從句,表示“自……以來”,說明的是現(xiàn)在的狀況,判斷用現(xiàn)在完成時(shí)態(tài),故答案為C。16.Could you tell me______________ at the meeting? I didn’t take part in it.Sorry, I don’t know, either.A.what he said B.what did he say C.what he says D.what does he say【答案】A【解析】句意“你能告訴我他在會(huì)議上說了什么嗎?對(duì)不起,我不知道”。根據(jù)tell sb sth可知,本題考查賓語從句。賓語從句要用陳述句語序,排除B和D,且根據(jù)I didn’t take part in it可知,用一般過去時(shí),故選A。17.The movement of boycotting(聯(lián)合抵制) the South Korean goods in whole China _______ for a few months by the time Lotte Group(樂天集團(tuán))agreed to provide land for USA.A.had been on B.had begun C.has been on【答案】A【解析】句意:到樂天集團(tuán)為美國提供土地為止,政府在全中國聯(lián)合抵制韓國貨物已經(jīng)開始了一段時(shí)間。考查時(shí)態(tài)的用法。由時(shí)間狀語by +過去時(shí)間可知要用過去完成時(shí),排除C;begin為瞬間動(dòng)詞,不能與一段時(shí)間連用。故選A。18.–Have you seen yesterday’s TV play? I think Mary won’t marry the rich man.–I agree. Unless the man finally ________ his mind to help the poor.A.change B.changes C.changed D.will change【答案】B【解析】句意:你看過昨天的電視劇嗎?我想瑪麗不會(huì)嫁給那個(gè)有錢人的。我同意。除非這個(gè)人最終改變主意去幫助窮人。unless引導(dǎo)的條件狀語從句用一般現(xiàn)在時(shí)態(tài)表將來,故答案為B。19.—Dear, I have an important meeting tomorrow.—It doesn’t matter.