雅思写作之形式主语从句

雅思写作之形式主语从句

形式主语从句是雅思写作中非常常用的一种句型。本篇文章中环球教育小编将为大讲解一下雅思作文中主语从句的相关知识点。

先先来看一下它是如何构成的：主语从句，顾名思义，就是主语是个句子。为了避免“1”的位置上显得过于沉重，英语中经常会用it来取代主语从句，而把主语从句后置。

示例：That he was very embarrassed was obvious.划线部分就是主语，用that引导，这样的摆放是不是让全句显得头重脚轻啊？所以，为了避免这一状况，我们使用it，即：

It was obvious that he was very embarrassed.

主语从句的时态规则：

1）、主句谓语动词是现在或将来时，从句谓语动词可以用任何需要的时态。

I wonder what he is doing now.

Do you know when and where he was born?

I'll write to tell him where I 'll meet him.

2）、主句谓语动词是过去时，从句谓语动词一般需用过去时。

（1）从句与主句的谓语动作同时发生，从句用一般过去时或过去进行时。

I thought that he studied hard.

He told me his son ws watching TV.

（2）从句谓语动作在主句谓语动作之后，从句用过去将来时。

He said he would spend his holidays in Qingdao.

（3）从句谓语动作在主句谓语动作之前，从句用过去完成时。

They told me they had waited for me half an hour.

（4）从句如果有表示过去某一具体时间的状语，仍用过去时。

She told me her brother died in 1945.