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根據(jù)句意故選B。30.Could you give me some advice on travelling?Take a map with you _______ you have a guide or you know the city very well.A.if B.unless C.a(chǎn)lthough D.because【答案】B【解析】句意:你能給我一些關(guān)于旅行的建議嗎?如果沒有向?qū)Щ蛘邔?duì)城市不很了解,那么就隨身帶著一張地圖。If引導(dǎo)的條件狀語從句中,如果主句是將來時(shí),從句用一般現(xiàn)在時(shí)代替將來時(shí)。由句意可知選D。句意:直到每個(gè)人都到了我們才開始討論。根據(jù)前文的can’t,可知構(gòu)成not…until…引導(dǎo)的時(shí)間狀語從句,表示“直到……才……”,故選A??疾閺膶龠B詞。27.We can39??疾閯?dòng)詞時(shí)態(tài)。26.Today’s young people can’t live without smart phones. They keep their hands on the phones whenever they go, even while they_______meals.A.had B.will haveC.a(chǎn)re having D.were having【答案】C【解析】【詳解】句意:今天的年輕人沒有智能手機(jī)就活不下去。句意為“我認(rèn)為他一直在飲酒,盡管我不恩給你完全確定。A. since 自從,因?yàn)椋? B. though盡管; C. until直到;根據(jù)My grandfather does Chinese Kung Fu every day和he is over ,盡管;故選B25.I think he’s been drinking, _________ I’m not pletely sure.A.if B.though C.until D.a(chǎn)s【答案】B【解析】if “如果、是否”;though “雖然;盡管”;until是“直到……才……”;as “由于、因?yàn)椤薄9蔬xB。23. Talk to your teacher and you will get help ________ you have a problem.A.unless B.ifC.until D.so【答案】B【解析】試題分析:unless除非,如果不; if是否,如果;until直到;So因此。if是否,如果;because因?yàn)?;after在......之后;until直到。her.A.if B.because C.a(chǎn)fter D.until【答案】D【解析】【詳解】句意:直到她的父親告訴她,她才知道關(guān)于它的一些事情。fatherit_______anythingt【點(diǎn)睛】if和unless引導(dǎo)的條件狀語從句主將從現(xiàn)常見的有以下幾種情況:一、條件狀語從句的主句是一般將來時(shí),那么從句常常用一般現(xiàn)在時(shí)如:When I grow up,I’ll be a nurse and look after patients我長大后要當(dāng)一名護(hù)士,照顧病人二、如果主句是祈使句,那么從句通常要用一般現(xiàn)在時(shí)如:Don’t laugh at me when I make a mistake.我犯錯(cuò)誤的時(shí)候不要笑話我.三、如果主句是含有情態(tài)動(dòng)詞的一般現(xiàn)在時(shí),根據(jù)需要從句多用現(xiàn)在進(jìn)行時(shí)如:You should be quiet when you are in the reading room在閱覽室時(shí)應(yīng)保持安靜22.HelenIn用在一天中的上午,下午或晚上,用在季節(jié),月份。21.If the singer ______ to Zigong ______ September 20th, please call me.A.will get;on B.gets;onC.gets;in【答案】B【解析】【詳解】句意:如果歌手9月20日到自貢,請(qǐng)給我打電話。根據(jù)句意可知,譯為“直到他解決這個(gè)問題他才離開學(xué)?!薄 leave the school __________ she worked out this problem.A.a(chǎn)s long as B.until C.since D.while【答案】B【解析】【詳解】句意“直到她解決了這個(gè)問題他才離開學(xué)?!薄ook through瀏覽;look around向四周看,根據(jù)句意可知應(yīng)該是“瀏覽雜志”,故選B。