Question

I think he has a pen 否定和一般疑问句

Answer 1

否定句为；I don't think he has a pen.【在主语I后动词think前加don't】

翻译：我不认为他有一支铅笔。

一般疑问句为；Do you think he has a pen?..【用助动词do来引导，且主语I改为you】

翻译：你认为他有一支铅笔吗？

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Answer 2

你好！
I don't think he has a pen.
Do you think he has a pen?
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Answer 3

否定句：I don't think he has a pen.
一般疑问句：Do you think he has a pen?

Answer 4

否定句为；I don't think he has a pen.【think要否定前移】

翻译：我认为他没有一支铅笔。

一般疑问句为；Do you think he has a pen?..【用助动词do来引导，且主语I改为you】

翻译：你认为他有一支铅笔吗？

Answer 5

否定I don't think he has a pen
一般疑问句Can you think he has a pen