You could write him a letter.（同义句?
问题描述：
You could write him a letter.（同义句?
答
You could write him a letter. 你可以给他写信。
You could write to him.
You could write a letter to him.
答
应该填写：
You could write to him
write to him= write hime a letter 给他写信
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答
You could write to him.
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You could write a letter to him.
你应该给他写一封信
给某人写信 write to=write a letter to
以上是我的回答,如果您对我的回答满意的话,请设为满意答案,欢迎随时提问,谢谢~
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答
You could write a letter to him.
You could write to him.