名词性从句+让步状语从句讲解材料.ppt

名词性从句;Related Conception (相关概念);在英语的句子结构中，本来该由名词充当的主语、宾语、表语和同位语，由一个句子来充当,这个句子就叫名词性从句。 ;请判断出下列的句子属于哪种从句;主语从句;主语从句;It + be + 形容词 ＋ that从句;It + be + 名词 ＋ that从句;试区分以下句子;宾语从句;我不知道他来不来。 我想知道他来还是不来。 你们是在谈论着他来还是不来吗？ 他不在乎天气是否好。;宾语从句中的否定转移;宾语从句中用it作形式宾语;同位语从句;试区分以下句子; 主语从句;what在从句中表示“什么”或“所…的”;Return ;whether从句作主语时不能用 if;让步状语从句专讲; 让步状语从句通常用 though, although, no matter, even if, if, even though, however, whatever等引起。 △ 让步状语从句可以前置，也可以后置；前置时强调主句内容，后置时强调从句内容。有时也可以采取中位（插入句中）。;2．even if, even though和 if 引导的让步状语从句： △ even if 与 even though同义，常用于强调让步概念，如： I’ll do it, even if it takes me all the afternoon. He was there even if we didn’t see him. Even if you fail, you can try again. I’ll help you, even if I don’t sleep for a night. 注：if 有时也可以用于让步含义，但要注意条件if 与让步if 的区别，试比较： If he is poor, how can he buy the house? (条件) If he is poor, he is at least honest. (让步) (= even if) If he is inexperienced, he won’t be able to accomplish it. (条件) If he is inexperienced, he is at any rate eager to learn. (让步) (= even if) If John had been there, I would have seen him. (条件) If John was there, I didn’t see him. (让步) (= even if) ;3．由as, that, though引导的特殊让步状语从句结构： 在正式文体或文学作品中，为了强调让步的含义，可用as引导让步从句。但as一般不置于句首，而将从句中的表语或状语置于句首。（though, that与as一样，也可以用于这种结构），如下面几种情况：;注意事项：;4．even though和 though even though (= even if) 引导的从句指把握不大或假设的事情，意为“即使”、“纵然”； though 引导的从句指事实，意为“尽管”、“虽然”，;6．whether…or…引导的让步状??从句： △ 这种从句也称“选择条件-让步状语从句”，可位于主句之前或之后，如： Whether he drives or (whether he) flies, he will be here on time. Whether you like it or not, you’ll have to do it. Whether or not it rains, I’m giving a party tomorrow. We hold that all countries, (whether they are) big or small, (whether they are) rich or poor, should be equal. Whether it rains or snows, I will go tonight. She had to go, whether or not she wanted it.;7．由连接代词whoever, whomever, whatever, whichever引导的让步状语从句： Whoever (= no matter who) is unwilling to go, I will go.