SAT 语法中doubt that 还是doubt whether?

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SAT语法中doubtthat还是doubtwhether?SAT语法中doubtthat还是doubtwhether?SAT语法中doubtthat还是doubtwhether?1.[后接宾语从句时

SAT 语法中doubt that 还是doubt whether?
SAT 语法中doubt that 还是doubt whether?

SAT 语法中doubt that 还是doubt whether?
1.[后接宾语从句时,如主句为肯定句时用 if 或 whether 连接,如主句为否定句或疑问句时用 that 连接] 不信任,不相信,怀疑,疑惑:I never doubted you; I was sure you would bring me the money.我从不怀疑你的,我肯定你会给我带来这笔钱的.I doubt whether (或 if) he will want to participate.我怀疑他是否愿意参加.
2.[后接宾语从句时,如主句为肯定句时用if 或 whether 连接,如主句为否定句和疑问句时则用that 连接]不能肯定,拿不准,对…没准儿,对…吃不准:I doubt whether (或 if) he'll change his mind.我拿不准他是否会改变主意.I wouldn't doubt that he'd want to help.我肯定他愿意帮忙.
3.[后接宾语从句时,用that连接]认为…未必可能:I doubt that he was invited.我看他未必受到了邀请.I don't doubt that she'll come我肯定她会来的.

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都可以,是依据句子的意思而定的,
比如:I never doubted that she would come. 我从未怀疑过她会来。
I doubt whether the new one will be any better. 我不敢肯定这个新的是否会好一些。