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f D.Unless【答案】D【解析】【詳解】句意:除非你被邀請(qǐng)發(fā)言,否則你應(yīng)該在會(huì)上保持沉默。;……之后;;。根據(jù)句意可知,此句是條件狀語(yǔ)從句,動(dòng)詞invite與句子的主語(yǔ)you之間在邏輯上存在被動(dòng)關(guān)系,此空是除非,如果不的意思,此空故填Unless,故選D。13.Mr. White tells us the calls meeting will be cancelled if no agreement _________ tomorrow.A.is reached B.will be reachedC.is going to be reached D.has been reached【答案】A【解析】【詳解】句意:懷特先生告訴我們,如果明天沒有達(dá)成協(xié)議,電話會(huì)議將取消。本題是含有if引導(dǎo)的條件狀語(yǔ)從句的復(fù)合句。在 if 引導(dǎo)的條件狀語(yǔ)從句中,如果從句談?wù)摰氖且粋€(gè)有可能發(fā)生的事實(shí)及其產(chǎn)生的相關(guān)的結(jié)果,主句用一般將來(lái)時(shí)態(tài),從句用一般現(xiàn)在時(shí)態(tài)。選項(xiàng)的位置在 if 引導(dǎo)的條件狀語(yǔ)從句中,要用一般現(xiàn)在時(shí)態(tài),B C選項(xiàng)是將來(lái)時(shí)態(tài)不符合題意要排除。D選項(xiàng)是現(xiàn)在完成時(shí)態(tài)不符合題意要排除。Reach an agreement達(dá)成協(xié)議固定短語(yǔ)搭配。agreement is reached協(xié)議做主語(yǔ)要用被動(dòng)語(yǔ)態(tài),故選A。【點(diǎn)睛】if 條件句不一般,幾個(gè)要點(diǎn)記心間。條件句,放在前,逗號(hào)要放句中間。條件句表可能,主句多用將來(lái)時(shí);條件句表事實(shí),主句常用現(xiàn)在時(shí)。在 if 引導(dǎo)的條件狀語(yǔ)從句中,如果從句談?wù)摰氖且粋€(gè)有可能發(fā)生的事實(shí)及其產(chǎn)生的相關(guān)的結(jié)果,主句用一般將來(lái)時(shí)態(tài),從句用一般現(xiàn)在時(shí)態(tài)。如: We can walk there if we can39。t find a bus. If it rains tomorrow, we will not go to the zoo. What will you do if you find a panda in danger.如果 if 條件句談?wù)摰氖侵貜?fù)發(fā)生和預(yù)示要發(fā)生的情景和事件,則主從句大多用一般現(xiàn)在時(shí)態(tài)。如: If bears are in danger, they attack people.注意 :在 if 引導(dǎo)的條件狀語(yǔ)從句中,if 和條件句位置靈活,可直接放在主句后面,若 if 條件句放句首,從句后面要加逗號(hào),和主句隔開。還要注意前后時(shí)態(tài)一致原則。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.If you don’t go to the meeting tomorrow, ________ ?A.he will, too B.he won’t, either C.he does, too D.he doesn’t either【答案】B【解析】【詳解】句意:如果明天你不去開會(huì),他也不去??疾闀r(shí)態(tài)。If引導(dǎo)時(shí)間狀語(yǔ)從句,遵循“主將從現(xiàn)”原則,從句是一般現(xiàn)在時(shí),所以主句要用將來(lái)時(shí),排除C和D,too意為“也”,用于肯定句句末,either意為“也”,用于否定句句末,排除A,故答案選B。16.Henry will give us a report as soon as he _______.A.a(chǎn)rrives B.a(chǎn)rrived C.is arriving D.will arrive【答案】A【解析】【詳解】句意:亨利一到,他就要給我們做一個(gè)報(bào)告。當(dāng)主句描述將來(lái)動(dòng)作時(shí),英語(yǔ)條件狀語(yǔ)從句中用一般現(xiàn)在時(shí)態(tài)表示將來(lái)的動(dòng)作;主語(yǔ)單三,謂語(yǔ)動(dòng)詞用單數(shù)形式;故選A。17.She stopped talking her mother came into the room.A.a(chǎn)s soon as B.unless C.though【答案】A【解析】句意:她媽