be sure of 與 be sure about 的區(qū)別:
be sure of 確信
例句:She looked over her shoulder to be sure of her footing.她扭頭看了看后面以確認自已是否站穩(wěn)了.
be sure about 對.很有把握
例句:You can be sure about their interest in it.你可以肯定他們對引很感興趣.
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