if 的虚拟条件句中，如果谓语动词含有were, should, had 这几个词，可以把were, should, had 放在if 的位置， 并去掉if ：这就是虚拟条件句的倒装。但已经没有if 了，如 ： 1.If he had come yesterday, he would have known it. =Had he come yesterday, he would have known it. 2.If I were there, I would help them. =Were I there, I would help them. 3.If I should have 200,000 yuan, I would buy a good car. =Should I have 200,000 yuan, I would buy a good car.1._foryourhelp,wedneverhavebeen abletogetoverthedifficulties. A.HaditnotB.Haditnotbeen C.IfitwerenotD.Ifwehadnotb
