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;;;。 【點(diǎn)評】考查連詞辨析,首先識記連詞詞義,然后根據(jù)句意確定。27.Scientists say we will have no water to drink__________ we protect water resources. A.whenEither。both...and...兩者都是,并列連詞,作主語時謂語動詞要用復(fù)數(shù); B: neither...nor...既不……也不……并列連詞,作主語時,謂語動詞要與就近的主語在人稱和數(shù)上一致; C: either...or...不是……就是……,或者……或者……,并列連詞,作主語時,謂語動詞要與就近的主語在人稱和數(shù)上一致; D: not... but...不是……而是……,并列連詞,作主語時,謂語動詞要與就近的主語在人稱和數(shù)上一致。ThoughB.D.B.B.t play puter games __________ he finishes his homework. A.12.The little boy was______ excited _____ say a word when he knew the result of the final exam. 故選C。whenbutuntilso除非改變飲食習(xí)慣,否則不會減肥,所以用unless,故選B。afterwhichbutwhileD.D. that riseC.16.You will miss the early bus ___________ you start now. You39。B.、又、和,既可以表示并列也可以表示遞進(jìn)。although【答案】 B 【解析】【分析】句意:—— 一個小猴因?yàn)橛行律拿妹没虻艿芸赡芨械絺?。Until【答案】 C 【解析】【分析】句意: nor此處表示爸爸媽媽駕照考試,not only…but also遵循就近一致原則,謂語動詞和最近的主語一致,此處my mother,動詞用三單式,而如用both…and,主語為復(fù)數(shù),謂語動詞用復(fù)數(shù)形式,故選A。根據(jù)主句The local living conditions(條件) have improved a lot可知時態(tài)是現(xiàn)在完成時,從句China set up the city of ,所以用since,引導(dǎo)時間狀語從句,從句用一般過去時,主句用現(xiàn)在完成時,故選C。beforeand【答案】 B 【解析】【分析】句意: 當(dāng)你學(xué)習(xí)英語時,要用它,否則你會失去它。B.?!絹碓蕉嗟娜讼肴ツ抢镒錾?。不僅我的父親,而且我的母親也通過了。 but alsoB.C.20.He has made 表示轉(zhuǎn)折。注意識記Not only…but also… 句型中謂語動詞的用法。Either, or舉起手的條件是知道答案,所以用if,如果,故選B。although【答案】 C 15._______________ you know the answer, please _______________ your hand quickly. A.thoughB.B.before2.This is the most important task andD.C.which【答案】 A 10.After the new highspeed railway line began operations, the time on the trip from Lianyungang to Qingdao now is much less than __________in the past.理解選項(xiàng)意思和用法,根據(jù)句子的