宾语从句是指在一个句子中充当宾语的从句。
宾语从句通常包括一个连接词（如that, if, whether, who, whom, whose, what, when, where, why, how等）以及一个主语和谓语。
以下是宾语从句的用法总结：
1. 宾语从句作为动词的宾语：
- She said (that) she would come to the party.（连接词可以省略）
- I don't know if it will rain tomorrow.
- They wonder whether she is telling the truth.
- He asked me who had taken his book.
2. 宾语从句作为介词的宾语：
- We talked about what happened at the meeting.
- She is interested in where they will go for vacation.
3. 宾语从句作为形容词的宾语：
- I am happy that you passed the exam.
- He is sure she will succeed.
4. 宾语从句作为名词的宾语：
- The doctor's advice is that I should get more rest.
- Her hope is that they will arrive safely.
5. 宾语从句在特殊疑问句中：
- I asked him what he wanted.
- Tell me when she will arrive.
- Do you know who she is?
需要注意的是，宾语从句通常使用连词引导，但有时候也可以省略连接词，这取决于具体的情况。此外，宾语从句的时态、语序等要遵循语法规则和句子的需要。
