专题05 原因状语从句（讲）-【中职专用】中职高考英语二轮复习专项突破（状语从句精讲）

专题05 原因状语从句 例句 My mother doesn't go to work because she is ill. As (由于)we have no money, we can't buy it. Now that （既然）you are here, you'd better stay here. 区分because，as, since, for because, 表直接原因，语气最强，放主句前后都可， They went to school by bus because it was cheap. Since you don't trust him, you should not employ(雇佣) him. A：Why can’t I go?　 B：Because you are too young. why提出的问题，只能用because since 表示已知的，显然的理由或原因，意思是既然，较正式，语气比because弱 as 附带说明的双方已知的原因，语气比since弱，位置灵活,意思为“由于” As it is dark, you'd better not go out. for 表示不知道的原因，语气最弱，位于主句之后，对前面内容进行补充及解释说明，意思为“因为” Mr. Green must be ill, for he is absent(没出席的) today. now that “既然” now that用来说明一种新情况，然后加以推论。 Now that you are ready, we'll start at once. 既然你已经准备好了，我们马上开始。 表示“……的原因是因为……”这一意义时，一般要用 The reason why…is that… 如：The reason why he cannot come is that he is ill. 重要句型 注意： 1. because 和 so 不能连用，二者只能出现其一 Because she is ill，my moyher doesn't go to work . She is ill，so my moyher doesn't go to work . 2. because 和 because of 的区别及转换