Transcript 微课件

淑质英才-喻晓娟英语系列微课5：
— 主语从句
单位：江西省临川一中
作者：喻晓娟
QQ号: 1650966218
http://www.jxteacher.com/yxj
教材版本：新课标人教版高中英语
主语从句
适用对象：高二、高三学生
What part does the underlined part
serve as in each sentence?
A tree has fallen across the road.
You are a student.
To find your way can be a problem.
Smoking is bad for you.
What she said is not yet known.
That we shall be late is certain.
It is certain that we shall be late.
主语从句
（Noun Clauses as the Subject）
定义：
用作主语的从句叫主语从句，它是名
词性从句之一。引导主语从句的连接词有：
连词that, whether；连接代词who,
what和which；连接副词when, where,
how和why。
用法：
1) 由what等代词引导的主语从句：
What the teacher said today was
quite right.
老师今天说的话是十分正确的。
2) 由连词that引起的主语从句：
That they are badly in need of help is
quite clear.
他们急需帮助，这是十分明显的。
3) 由连接代词或连接副词以及whether
引起的主语从句。
Whether they will sell the house is
not yet decided.
他们是否卖掉这所房子还没有决定。
4) whatever, whoever也可引导主语从句。
Whatever was said here must be kept
secret.
这里说的话都应当保密。
Whoever makes mistakes must
correct them.
凡犯了错误的人都必须改正。
注意: 上述例句中的主语从句都是放在
句首, 但有时为了使句子结构平衡, 避免
“头重脚轻”, 常用 it 作形式主语, 而
把从句放在后面。 例如:
It is a pity that she has made
such a mistake.
她犯了这样一个错误, 真是遗憾。
填空。
1. _____
That you don’t like him is none of my
business.
2. _____
What he said at the meeting astonished
everybody present.
3. ________
Whether the 2000 Olympic Games will
be held in Beijing is not known yet.
4. ________
Whoever leaves the room last ought to
turn off the lights.