主语从句：放在动词之前 That he passed the exam made his parents satisfied. 宾语从句：放在动词或介词之后 I don't know when we shall leave here. 定语从句：名词或代词后 The girl who is standing under the big tree is my sister. He who doesn't reach the Great Wall is not a true man. 状语从句: 放在主句之前或之后 I'll stay at home if it rains tomorrow. Though he works hard, he makes little progress. 表语从句:放在系动词之后 China is no longer what it used to be.
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