中考英語(yǔ)專題復(fù)習(xí)：條件狀語(yǔ)從句(專業(yè)版)
【正文】 從上述例句可以看出if, unless, on condition (that), supposing, provided等詞引導(dǎo)的條件狀語(yǔ)從句,主從句條件關(guān)系分明,結(jié)構(gòu)清晰?！纠緾ome tomorrow if possible. 可能的話，明天來(lái)。學(xué)習(xí)條件狀語(yǔ)從句應(yīng)注意以下幾點(diǎn)：（1）條件狀語(yǔ)從句中一般不使用將來(lái)時(shí)態(tài)，盡管主句使用將來(lái)時(shí)態(tài)，而主句用一般現(xiàn)在時(shí)或現(xiàn)在完成時(shí)。【例】I will e to see you if I have time.我有時(shí)間，我就來(lái)看你。I will buy a DVD set if necessary.必要的話，我就買一臺(tái)DVD。但有些句子,雖沒(méi)有含條件關(guān)系的連詞,卻也隱含著條件關(guān)系,這些句子常用一些詞,如but for, without等引出一個(gè)介詞結(jié)構(gòu)來(lái)表示條件,條件常常是虛擬的,或與事實(shí)相反的假設(shè)。t be against us in the meeting provided that we ask for his advice in ,他就不會(huì)在會(huì)上反對(duì)我們。 (, D對(duì)） （3）條件狀語(yǔ)從句中的省略。s go out for a walk. 如果你不太累讓我們出去。If the rain stops, I shall go out for a walk.如果雨停了，我就出去散步。那么,除了if之外,是否還有其他連詞也可以引導(dǎo)條件狀語(yǔ)從句呢?回答是肯定的,不僅有,還有很多。如: but for 若非,要不是 But for the rain, we should have a pleasant ,我們的旅行肯定會(huì)很愉快。 He won39。 (3) 注意如果以上兩類條件句中含有助動(dòng)詞、情態(tài)動(dòng)詞，be或have, 則常常不用if，而用倒裝結(jié)構(gòu)： ____ before we depart the day after tomorrow, we should have a wonderful dinner party. A) Had they arrived B) Would they arrive C) Were they arriving D) Were they to arrive 如果我們后天走之前他們到達(dá)的話，我們就舉行一次豐盛的宴會(huì)?！?If you are not too tied, let39。（2）注意條件狀語(yǔ)從句在虛擬語(yǔ)氣中的使用。這些詞由于出現(xiàn)的頻率較小,且用法較復(fù)雜一些,所以不如if為大家所熟知罷了。But for your help, we should not have finished in ,我們肯定不能及時(shí)完成任務(wù)?！ e will sign the contract provided we offer more favorable ,他就會(huì)在合同上簽字。如: If the policeman had arrived earlier, he would have seen the accident. 要是警察更早些到達(dá)，他就能見(jiàn)到事故了。s go out for a walk unless you are too tired. 如果你不累的話讓我們出去走走。【例】If I were to I should first of all get the experts to discuss the pl
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