英语宾语从句是一个句子，用来充当另一个句子中的宾语。宾语从句有几种常见的形式：
1. **陈述句形式：**
- I believe (that) he is honest.
- She said (that) she would come.
2. **一般疑问句形式：**
- Do you know if he is coming?
- Could you tell me whether she will be here?
3. **特殊疑问句形式：**
- I don't know what he wants.
- Can you tell me when the train will arrive?
4. **感叹句形式：**
- She wonders how they did it.
- I can't believe what he said.
这些形式都可以在主句中充当宾语，起到传达信息、提问、表达感叹等不同的目的。注意，有时候在宾语从句中可以省略连接词 "that"，但不是必须的。
