高中英语人教版选择性必修第一册Unit 5 Working the land 主语从句 课件(共30张PPT)

(共30张PPT)
Unit 5
Discover Useful Structures
Subject Clause
主语从句
Definition and types:
简单句
句子
形容词性从句（定语从句）
并列句
类型
主语从句
主句
复合句
宾语从句
从句
名词性
从句
表语从句
同位语从句
副词性从句（状语从句）
What's the subject (什么是主语？)
l.Jane works hard.名词作主语
2.You are a student.代词作主语
3.The old should be respected.形容词作主语
4.Smoking is bad for you.动名词作主语
5.To find your way can be a problem.动词不定式时作主语
6.What she said is not yet known.主语从句作主语
结论：
主语是句子说明的人或事物，一般放在句首。
一个句子来充当主语叫主语从句。
课文原句回顾
1.However
what
concerned him most was
that
farmers often had poor harvests and sometimes even had a
serious shortage of food to eat.
2.How_this could be done was a challenging question at the
time.
3.However,whether_it was possible to develop a hybrid of self-
pollinating plants such as rice was a matter of great debate.
4.Today,
it
is estimated that about 60 percent of
domestic rice...
5.What i
impresses people most about Yuan Longping is his
ongoing ability to fulfil his dreams.
Find out the subject in the sentences.
1.The man is looking at you.
2.You are a student.
3.To find your way is a problem.
4.Smoking is bad for you.
5.What you need is a book.
6.That Tom will come here excites me.
7.When they will turn up is uncertain.
8.It is a pity that you didn't see him.
用作主语的从句叫主语从句。