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引導(dǎo)的時(shí)間狀語從句,主句用現(xiàn)在完成時(shí)態(tài),從句用一般過去時(shí)態(tài),其他不符合題意,故選C。13.They will lose the game _______ they try their best.A.unless B.once C.since D.a(chǎn)fter【答案】A【解析】【詳解】試題分析:句意:他們會(huì)輸?shù)舯荣惖?,除非他們盡自己最大的努力。lose the game 輸?shù)舯荣悾瑃ry one’s best 盡最大的努力。 A. unless 除非; B. once 一次;C. since 因?yàn)椋?D. after 在…之后,根據(jù)題意可知此句是unless引導(dǎo)的條件狀語從句,故選A。14.You39。d better get home earlier today we can go out for a big meal.A.in order to B.such that C.so that D.in order【答案】C【解析】句意:你最好今天早點(diǎn)回家,這樣我們就可以出去吃大餐了。A. in order to 為了,后跟動(dòng)詞原形;B. such that沒有此用法;C. so that為了,引導(dǎo)目的狀語從句;D. in order+that+從句,引導(dǎo)目的狀語從句。we can go out for a big meal表示目的的完整句子,所以使用連詞詞組so that。故選:C。15.Daming hasn39。t done much exercise _______ he got his puter.A.when B.if C.though D.since【答案】D【解析】試題分析:句意:自從有了電腦,大衛(wèi)就沒有做許多運(yùn)動(dòng)了。A. when當(dāng)……時(shí);指時(shí)間;B. if如果,表示條件;C. though雖然,盡管,表示讓步;D. since自從,表示時(shí)間的起點(diǎn)。不鍛煉是從有電腦開始的,表示時(shí)間的起點(diǎn),用since。故選D??键c(diǎn):考查連詞辨析。16.Cathy is afraid of the dog. She will run away _______she sees it.A.ever since B.a(chǎn)lthough C.a(chǎn)s soon as D.so that【答案】C【解析】【詳解】句意:凱西害怕狗,她一看到狗就跑了。考查連詞辨析。A. ever since自從;B. although雖然、盡管;C. as soon as一…就;D. so that以便;所以。根據(jù)Cathy is afraid of the dog. 凱西害怕狗,可推知是她一看到狗就跑開了,結(jié)合選項(xiàng)可知C選項(xiàng)符合題意,故答案選C。17.She stopped talking her mother came into the room.A.a(chǎn)s soon as B.unless C.though【答案】A【解析】句意:她媽媽一進(jìn)到房間里,她就停止了說話。A. as soon as 一就; B. unless 除非; C. though盡管;這里是考察連詞,根據(jù)She stopped talking 和her mother came into the ,可知是媽媽一進(jìn)到房間里,她就停止了說話;故選A18.— What were you doing ______ I knocked at the door?— I was sleeping.A.unless B.onceC.when D.while【答案】C【解析】【詳解】試題分析:句意:-我敲門時(shí),你在做什么?-我在睡覺。A.unless如果不,除非;引導(dǎo)條件狀語從句;B.once一旦……,引導(dǎo)條件狀語從句;C.when當(dāng)……時(shí),表示兩個(gè)動(dòng)作同時(shí)發(fā)生,主句一般使用過去時(shí),從句使用過去進(jìn)行時(shí);D.while當(dāng)……時(shí),表示兩個(gè)動(dòng)作同時(shí)發(fā)生,后跟延續(xù)性動(dòng)詞,從句一般使用進(jìn)行時(shí)態(tài),表示一段時(shí)間。本題表示“當(dāng)……時(shí)”,knock是非延續(xù)性動(dòng)詞,故選C。考點(diǎn):考查連詞辨析。19.Rose