C. if
D. for
4. ---What do you think made Mary so upset?
---______ her bicycle.
A. As she lost B. Lost
✔C. Losing
D. Because of losing
Losing her bicycle made Mary so upset.
动名词作主语、主语从句
知 识 点 讲 解
Painting is her hobby.
动名词作主语
动名词作主语 1. 动名词做主语往往表示经常性、习惯性的动作, 在口 语中也可以表示具体的动作。
Doing morning exercise is good for our health.
动名词作主语 2. 动名词做主语时常后置，用it作形式主语。
动名词作主语、主语从句
动名词作主语
主语从句
1. 经常性、习惯性的动作 1. 作主语的从句 2. 常后置，用it作形式主语 2. 引导词
that无词义，不可省略 2. What surprised me was to see him here.
what表示“什么”，在句中充当主语，宾语或表语
主语从句 3. Whether he is coming doesn’t matter much.
whether表示“是否”，不用if 4. When he will come is unknown.
It's no use crying over spilt milk.
主语从句
主语从句是在复合句中作主语的从句。 常用的从句引导词有that，whether， who，whom，whose，what，which， when，where，why，how等。
主语从句 1. That he knows Japanese is known to all.
2. ______ you are right is not known yet.
A. Whenever
B. If ✔C. Whether
பைடு நூலகம்
D. Whether D. That
3. It worried her a bit _______ her hair was turning gray.
A. while ✔B. that
when表示“什么时候”，在句中充当状语
主语从句 5. It remains a secret how they climbed up the mountain.
形式主语 表示方式，在句中充当状语
即时练习
1. _______ he said is true.
A✔. What
B. That
C. Which