【正文】 。根據(jù)句意，故選B。50． has a habit of taking a shower _________ he has breakfast.A．though B．before C．because D．since【答案】B【解析】試題分析：句意：史密斯先生有在吃早飯前洗澡的習(xí)慣。不才 從…以來。C. when當(dāng) 直到…才。本題考查連詞。49．We don39。（引導(dǎo)時(shí)間狀語從句）；B. 在……之后（引導(dǎo)時(shí)間狀語從句）；……時(shí)候（引導(dǎo)時(shí)間狀語從句）；（引導(dǎo)時(shí)間狀語從句）?！?8．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?！汀ㄒ龑?dǎo)時(shí)間狀語從句）；（引導(dǎo)條件狀語從句）；（引導(dǎo)讓步狀語從句）；，為的是（引導(dǎo)目的狀語從句）。47．I’m afraid ebooks might be bad for our eyes.Hmm, but they will be helpful for us_________we put them to good use.A．a(chǎn)s soon as B．a(chǎn)s long as C．even though D．so that【答案】B【解析】【詳解】句意“恐怕電子書對(duì)我們的眼睛有害。not until直到……才。A. because因?yàn)?；B. until直到；C. if如果。aAmythet46．WeA. if如果，引導(dǎo)條件狀語從句；B. unless如果不、除非，相當(dāng)于if not，引導(dǎo)條件狀語從句；C. though雖然、盡管，引導(dǎo)讓步狀語從句；D. because因?yàn)?，引?dǎo)原因狀語從句。我馬上去睡覺。ll feel sleepy tomorrow _______ you go to bed early.—OK, Mom. I’ll go to bed at once.A．if B．unless C．though D．because【答案】B【解析】【詳解】句意：——玲玲，如果你不早點(diǎn)睡覺，明天你會(huì)感到困的。look 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。While當(dāng)…時(shí)候，引導(dǎo)時(shí)間狀語從句，從句中的謂語動(dòng)詞應(yīng)該是延續(xù)性的；When當(dāng)…時(shí)候，引導(dǎo)時(shí)間狀語從句，從句中謂語動(dòng)詞可以是延續(xù)性的，也可以是瞬間性的；through穿過，通過；around周圍。 through C．When。44．________ I came back home yesterday, my mother was looking ________ a magazine.A．While。A. 他每天有足夠的時(shí)間看足球比賽；B. 他有足夠的時(shí)間去網(wǎng)上購(gòu)物；。根據(jù)題干可知我們得等到大家都到了，這里表示直到……時(shí)候用until．故選B．43．He was so busy preparing for the high school entrance exam that .A．he had enough time to watch football matches every dayB．he was free enough to go shopping onlineC．he had no time to do sports every day【答案】C【解析】【詳解】句意：他忙于準(zhǔn)備高中入學(xué)考試，以至于他每天都沒有時(shí)間做運(yùn)動(dòng)。我們必須等到大家都到齊了。42．Has the meeting begun yet？Not yet． We have to wait everyone is here．A．a(chǎn)nd B．until C．or D．but【答案】B【解析】【詳解】考查連詞用法。if如果，表?xiàng)l件；until直到，表時(shí)間，多與not連用表示“直到……才”；when什么時(shí)候，表時(shí)間；since自從，用于表示一段時(shí)間。t work you do.A．if B．until C．when D．since【答案】B【解析】【詳解】句意：我相信夢(mèng)想在你做之前是不會(huì)實(shí)現(xiàn)的。41．I39。A表示直到…才，B表示當(dāng)…時(shí)，C表示在…之后。直到她媽媽回家她才吃飯。40．Rose cooks meals at home on Sundays. She never eats ________ her mother es back and she’d like to enjoy it together.A．until B．when C．a(chǎn)fter【答案】A【解析】考查連詞辨析。+形容詞 that+從句表示如此……以至于；根據(jù)題意 ：李娜是如此的出名以至于在中國(guó)所有的網(wǎng)球明星都喜歡她。 to表示做某事足夠…… C．a(chǎn)s。 that【答案】D【解析】試題分析：A．too。 to C．a(chǎn)s。39．Li Na is famous all the tennis fans in China know her.A．too。as+形容詞的原級(jí)+as“和……一樣”，修飾動(dòng)詞write，故用副詞carefully，故選D。在他的幫助下，他的妹妹寫得和他一樣認(rèn)真。 38．—His handwriting is very careful.—Yeah. With the help of him, his sister writes as ________ as him.A．care B．carefulC．more carefully D．carefully【答案】D【解析】試題分析：句意：——他的書寫非常認(rèn)真。A. If 如果，引導(dǎo)條件狀語從句；B. Since 由于，引導(dǎo)原因狀語從句；C. Although 盡管，雖然，引導(dǎo)讓步狀語從句；D. Because 因?yàn)?，引?dǎo)原因狀語從句。while表示一段時(shí)間，后面使用進(jìn)行時(shí)態(tài)，主句是一般現(xiàn)在時(shí)，可知從句使用現(xiàn)在進(jìn)行時(shí)；故答案C。無論何時(shí)甚至在吃飯時(shí)他們都手里拿著手機(jī)。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。35．We can39。not…until…“直到……才……”；since“自……以來；既然，由于”；if“如果”；while“雖然，當(dāng)……時(shí)候”。34．We didn’t start our discussion __________ everybody arrived.A．since B．if