【文章內(nèi)容簡(jiǎn)介】
l miss the bus unless you hurry up.你要不快點(diǎn)就會(huì)錯(cuò)過(guò)班車。故選D.考點(diǎn):考查連詞的用法。12.If our government pay attention to the safety of food, our health in danger.A.isn’t。 is B.doesn’t。 will beC.won’t。 is D.isn’t。 will be【答案】B【解析】【詳解】句意:如果我們的政府現(xiàn)在不注意食品安全,我們的健康就會(huì)出于危險(xiǎn)之中。結(jié)合語(yǔ)境可知,本句主語(yǔ)描述的是將來(lái)某時(shí)進(jìn)行的動(dòng)作,故用一般將來(lái)時(shí)態(tài)。當(dāng)主句描述將來(lái)時(shí)態(tài),if引導(dǎo)的條件狀語(yǔ)從句中用一般現(xiàn)在時(shí)態(tài)表示將來(lái)動(dòng)作,結(jié)合語(yǔ)境可知選B。13.I didn39。t realize he was a famous scientist you told me.A.until B.because C.since【答案】A【解析】句意:直到你告訴我,我才知道他是一位出名的科學(xué)家。A. until到…為止;B. because 因?yàn)椋籆. since既然,因?yàn)?。本題考查固定句式not…until…直到……才。其用法是如果(主)句中的謂語(yǔ)是終止性動(dòng)詞,應(yīng)采用“not…until”結(jié)構(gòu),意為“到……時(shí)候才” 根據(jù)句子結(jié)構(gòu),結(jié)合選項(xiàng),故選A。14.Tony has had to cook by himself ________ his mother went on business to Guangzhou.A.since B.a(chǎn)fter C.during D.when【答案】A【解析】【詳解】句意:自從媽媽去廣州出差以來(lái),托尼不得不自己做飯。A. since從……以來(lái);B. after在……之后;C. during 在……期間;D. when當(dāng)……時(shí)候。since后跟時(shí)間狀語(yǔ)從句時(shí),表示的是到目前為止的時(shí)間段,從句時(shí)態(tài)為一般過(guò)去時(shí),而主句的時(shí)態(tài)為現(xiàn)在完成時(shí),故正確答案為A。15.I enjoy fresh air so always sleep with the window open ______ it is really cold.A.unless B.when C.if D.Since【答案】A【解析】【分析】【詳解】句意:我喜歡新鮮空氣,因此我總是讓窗戶開(kāi)著,除非真的很冷??疾檫B詞辨析。A.Unless除非,相當(dāng)于if not,表?xiàng)l件;B.When當(dāng)……的時(shí)候;C.If如果,表?xiàng)l件;D.Since自從。根據(jù)I enjoy fresh air so always sleep with the window open 可知除非真的很冷否則總是讓窗戶開(kāi)著,unless符合題意,故選A。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??疾檫B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(kāi)了,結(jié)合選項(xiàng)可知C選項(xiàng)符合題意,故答案選C。17.Remember to keep the dog on a leash (狗鏈)________ you walk it, honey!Sure. I won’t let it hurt others.A.until B.a(chǎn)fter C.while D.since【答案】C【解析】【詳解】句意“寶貝,當(dāng)你遛狗時(shí)記得給狗拴上鏈子。好的,我不會(huì)讓他傷害其他人”。……才(引導(dǎo)時(shí)間狀語(yǔ)從句);B. 在……之后(引導(dǎo)時(shí)間狀語(yǔ)從句);……時(shí)候(引導(dǎo)時(shí)間