Mary wants to know what he thinks of the trip 为什么不加does？(Mary wants to know what

• Mary wants to know what he thinks of the trip的成分分析，
• what he thinks of the trip?
• He doesn't know ,Who is he?【合二为一】Mary wants to know,What does think of the trip[合二为一】
• Mary wants to know ____A.what he thinks of the school trip B.how he thinks of the school trip

Mary wants to know what he thinks of the trip的成分分析，

Mary是主语 wants是谓语 to know 是宾语what he thinks of the trip是动词know的宾语从句，即是不定式的宾语。

what he thinks of the trip?

do作为助动词可以隐身（及省略不写）

He doesn't know ,Who is he?【合二为一】Mary wants to know,What does think of the trip[合二为一】

应该是：

变成复合句，关键是要把从句变为陈述句语序

同时要注意从句与主句时态要一致

He doesn't know who he is.

他不知道他是谁

Mary wants to know what he(she) thinks of the trip.

玛丽想知道他(他)对这次旅游是怎么想的。

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Mary wants to know ____A.what he thinks of the school trip B.how he thinks of the school trip

A 记住，这是个在know后面的宾语从句，只能用what充当宾语

记住采纳呵