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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著,除非真的很冷??键c:考查連詞的用法?!崩羁藦娍偫?月5日在北京說。結(jié)合句意,前半句表示我們無法改變昨天,后半句表示我們可以面對明天,前后是讓步關(guān)系,故用連詞though。15.Pandas are facing danger!The situation won’t change humans stop killing.A.unless B.though C.if D.a(chǎn)fter【答案】A【解析】試題分析:句意:熊貓面臨危險。A. When當……時候; B. After在……以后; C. Unless除非; D. Until到……為止??键c:考查連詞辨析22.Chen Wei isn’t at school today ________ he is taking a robot petition in Shanghai.A.so B.because C.before D.if【答案】B【解析】試題分析:句意:陳煒今天不在學(xué)校因為他在上海參加機器人競賽。根據(jù)句意,應(yīng)選A。27.To make your DIY work perfect, you’d better not start ___________ you get all the tools ready.A.when B.while C.before D.a(chǎn)fter【答案】C【解析】【詳解】句意:為了讓你的DIY作品完美,你最好在你把所有的工具都準備好前不要開始。so 所以;because 因為,引導(dǎo)原因狀語從句;because for 不符合英語表達習(xí)慣;because of因為,由于,后面不能加句子,只能加詞或短語, 所以選D。前因后果,后面是表原因的狀語從句,用because連接。根據(jù)題意,故選C。故選:B。根據(jù)句意可知前后句是因果關(guān)系,故選C。14.Would you like to go bike riding with us tomorrow? Sure, ____ I am busy.A.since B.unless C.when D.until【答案】B【解析】試題分析:句意:你想要明天和我們一起去劃船嗎?好的,如果我不忙我就去。;……之后;;??疾檫B詞辨析。4.—The novel seems a little boring. —You won’t enjoy it _______________ you put your heart into it.A.when B.if C.a(chǎn)fter D.unless【答案】D【解析】試題分析:句意:這部小說似乎有點兒無聊。2.Rony will get a chance to work in this pany ________ he doesn’t pass the interview.A.unless B.when C.if D.a(chǎn)fter【答案】A【解析】【詳解】句意“除非羅尼沒有通過面試,否則他將有機會在這個公司上班”。 until B.When。9.—Tom, do you know if Sam _______ to my party next week? —I think he will e if he __________.A.es。翻譯為“直到…為止…”;B. when可用作從屬連詞,引導(dǎo)狀語從句,表示時間時作“當…時,在…的時候”;C. unless“除非,如果不”,在意義上相當于if…not,因此在有些場