Goodness, I wonder if he knows.

天哪，我不清楚他知不知道。

《柯林斯英汉双解大词典》

I wonder if he will have time tomorrow, if he is free, I'll invite him to give a speech in our school.

我想知道他明天是否有时间，如果他有空，我将邀请他在我们学校做一个演讲。

youdao

I wonder if he, too, has donkey fever?

不知道他是不是也在生驴子热？

youdao

I wonder if he's going to write back.

我在想他会不会回信。

I wonder if 实战 - SpeakingMax英语口语达人

I wonder if he has a girlfriend.

我在想他是不是有女朋友。

I want to 实战 - SpeakingMax英语口语达人

And perhaps more importantly, I wonder if he can pull it off with personal congruence, integrity and credibility.

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Massa seems a whole-hearted racer, but I wonder if he and his loyal supporters will ever come this near to the title again.

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"He is a pretty cool fish, and I just wonder if there are more out there, " he said.

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