新一轮中考复习备考周期正式开始, 宾语从句时态的呼应 含宾语从句的复合句,主、从句谓语动词的时态呼应应包括以下三点内容: 1)如果主句的谓语动词是一般现在时,从句的谓语动词可根据需要,选用相应的任何时态。如: I don't know when he will come back.我不知道他将何时回来。 He tells me that his sister came back yesterday.他告诉我他姐姐昨天回来了。 2)如果主句的谓语动词是过去时,宾语从句的谓语动词只可根据需要,选用过去时态即一般过去时、过去进行时、过去将来时或过去完成时的某一种形式。如: ①The children didn't know who he was.孩子们不知道他是谁。 ②He asked his father how it happened.他问他父亲这件事是如何发生的。 3)如果宾语从句所表示的是客观事实、普遍真理、自然现象或习惯性动作等,不管主句用什么时态,从句时态都用一般现在时。如: The teacher said that the earth goes round the sun.老师说地球绕着太阳转。 He hasn't decided whether to go by bus or by train.他还未决定是乘公共汽车去还是坐火车去。 ④whether置于句首时,不能换用if。如: Whether this is true or not,I can't say.这是否真的我说不上来。 ⑤引导主语从句和表语从句时宜用whether。如: Whether she will come or not is still a question.她是否能来还是个问题。 The question is whether we can catch the bus.问题是我们能否赶上公共汽车。 ⑥若用if会引起歧义时,则用whether。如: Please let me know if you like the book.可理解为: a.Please let me know whether you like the book.请告诉我你是否喜欢这本书。 b.If you like the book,please let me know.你如果喜欢这本书,请告诉我。 3)如果宾语从句原来是特殊疑问句,只需用原来的特殊疑问词引导。如: Could you tell me why you were late for the meeting this morning?你能告诉我今天早上你为什么开会迟到吗? (责任编辑:admin) |