大学英语语法常见的问题（关于大学英语语法的内容分享）

大学英语语法常见的问题（关于大学英语语法的内容分享）　　引导方式状语从句。如： She loves the boy as if she were his mother. 她爱这男孩，就好像她是他的母亲一样。 The child talked to us as if he were a grown?up. 那孩子跟我们谈起话来，像个成年人似的。　　as if 从句的作用 ：在look seem 等系动词后引导表语从句。如： She looks as if she were ten years younger. 她看起来好像年轻了十岁。 It seems as if our team is going to win. 看来我们队要胜了。　　This holiday isn’t much fun; we might as well be back home. 这个假日过得真没意思，我们还不如呆在家里。　　如：If that is the cas

　　may [might] (just) as well…意为“不妨”、“还是…为好”等，用 might 比用 may 语气更委婉。may/might as well，固定短语，后面接不带to 的不定式，意为"不妨 不如" may as well 动词原形。

　　如：I’m ready，so I might as well go now.我已准备好，因此不妨现在就走。

　　There’s nothing to do so I may [might] as well go to bed. 既然没什么事可做，我还是去睡觉为好。

　　注：might as well 还可用于指过去的情况或用于比较两个令人不愉快的情况：

　　This holiday isn’t much fun; we might as well be back home. 这个假日过得真没意思，我们还不如呆在家里。

　　如：If that is the case we may as well try

　　as if 的用法：as if 好像，好似 She spoke to me as if she knew me. 她和我说话的神情，好像她早就认识我似的。 (= as though)

　　as if 从句的作用 ：在look seem 等系动词后引导表语从句。如： She looks as if she were ten years younger. 她看起来好像年轻了十岁。 It seems as if our team is going to win. 看来我们队要胜了。

　　引导方式状语从句。如： She loves the boy as if she were his mother. 她爱这男孩，就好像她是他的母亲一样。 The child talked to us as if he were a grown?up. 那孩子跟我们谈起话来，像个成年人似的。

　　as if 还可用于省略句中 如果as if 引导的从句是“主语 系动词”结构，可省略主语和系动词，这样as if 后就只剩下名词、不定式、形容词(短语)、介词短语或分词。如： He acts as if (he was) a fool. 他做事像个傻子。 Tom raised his hands as if (he was going) to say something. 汤姆举起手好像要说什么。 She left the room hurriedly as if (she was)angry. 她匆忙离开房间好像生气的样子。

　　as if 从句的语气及时态： as if 从句用陈述语气的情况。 当说话者认为句子所述的是真实的或极有可能发生或存在的事实时。如： It sounds as if it is raining. 听起来像是在下雨。 He talks as if he is drunk. 从他谈话的样子来看他是醉了。

　　as if 从句用虚拟语气的情况。 当说话人认为句子所述的是不真实的或极少有可能发生或存在的情况时。从句虚拟语气动词时态的形式如下：

　　如果从句表示与现在事实相反，谓语动词用一般过去时。如： You look as if you didn’ t care. 你看上去好像并不在乎。 He talks as if he knew where she was. 他说话的样子，好像他知道她在哪里似的。

　　从句表示与过去事实相反，谓语动词用“had 过去分词”。如： He talks about Rome as if he had been there before. 他说起罗马来好像他以前去过罗马似的。 The girl listened as if she had been turned to stone. 那女孩倾听着，一动也不动，像已经变成了石头似的。

　　从句表示与将来事实相反，谓语动词用“would/could/might 动词原形”。如： He opened his mouth as if he would say something. 他张开嘴好像要说什么。 It looks as if it might snow. 看来好像要下雪了。

　　It is said that和be said to

　　后面绝大多数情况是加一句俗语或谚语，或常识性的东西。表达这种意思的时候，It's said that是很自然而然一起脱口而出的。绝对没有人省略这个that.省略了的话，整句话听起来非常别扭。

　　be said to有据说，被认为 等意思。我想问的是be said to 后面跟的不定式的时态该如何表达，如现在完成时，过去完成时，一般现在时，现在进行时.........

　　举个例子：因为有to 所以现完和过完一样，一般现在时to do 现在进行时to be doing.

　　过去完成时：He is said to have visited more than 50 countries.

　　一般现在时：He is said to visit more than 50 countries.

　　现在进行时：He is said to be visiting more than 50 countries.