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( ) 2. change the speed of spaceships
( ) 3. control the direction of spaceships
( ) 4. control the temperature of
spaceships
√
√
√
定语从句
Spaceships which now mainly use electronic controls used to be controlled by astronauts.
关系代词
定语从句
先行词
关系词
先行词
在从句中成分
________
人
主语，宾语
which
_______
主语，宾语
that
物 ，人
___________
Who
物
主语，宾语
3 Read the following sentences and complete them with that, which, who.
1. Do you know Neil Armstrong _________was the first man to set foot on the moon?
2. This is the spaceship ________ the astronauts use on space.