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1 真實條件句 真實條件句用于陳述語氣,假設的情況可能發(fā)生,其中 if 是如果的意思?! r態(tài)關系句型: 條件從句 主句 一般現(xiàn)在時 shall/will + 動詞原形 If he es, he will bring his violin.典型例題 The volleyball match will be put off if it ___. A. will rain B. rains C. rained D. is rained 答案B。真實條件句主句為將來時,從句用一般現(xiàn)在時。注意:1) 在真實條件句中,主句不能用be going to表示將來,該用shall, will. (錯) If you leave now, you are never going to regret it. (對) If you leave now, you will never regret it. 2) 表示真理時,主句謂語動詞便不用shall (will) +動詞原形,而直接用一般現(xiàn)在時的動詞形式。2 非真實條件句1)時態(tài):可以表示過去,現(xiàn)在和將來的情況。它的基本特點是時態(tài)退后。a. 同現(xiàn)在事實相反的假設。句型 : 條件從句 主句 一般過去時 should( would) +動詞原形 If they were here, they would help you.b. 表示于過去事實相反的假設。句型: 條件從句 主句 過去完成時 should(would) have+ 過去分詞 If she had worked harder, she would have succeeded. The rice would not have been burnt if you had been more careful. If my lawyer had been here last Saturday, he would have prevented me from going. If he had e yesterday, I should / would have told him about it. 含義:He did not e yesterday, so I did not tell him about it. If he had not been ill and missed many classe