www.ypnh.net > DouBt后什么时候用iF 何时用whEthEr

DouBt后什么时候用iF 何时用whEthEr

1.doubt如果是动词引导宾语从句时,如果主句是肯定句,则宾语从句的引导词可用if/whether. 如:I doubt if/whether he is a student. 当然,如果此宾语从句中含有or/or not时,只能使用whether. 如:I doubt whether he is a student or not. I doub...

doubt如果是动词引导宾语从句时,如果主句是肯定句,则宾语从句的引导词可用if/whether.如:I doubt if/whether he is a student.当然,如果此宾语从句中含有or/or not时,只能使用whether.如:I doubt whether he is ...

doubt 在肯定句中跟名词性从句用就只用weather,doubt在肯定句中跟宾语从句就用weather或if 你有问的问题里边后面的句子做表语从句,是名词性从句的一种,所以只用weather,不用if

doubt的用法 doubt当动词时,在中后面可接if或whether。 在否定句及疑问句中可跟that从句。 有时在中也能跟that从句,但其含义是"恐怕...不会"。 I doubt if (或 whether) he will win. 我怀疑他能否赢。 I don't doubt that he will succeed. 我...

所怀疑的内容如果是陈述语气的事,用that, 所怀疑的内容如果是疑问语气的事,用if 或whether

doubt如果是动词引导宾语从句时,如果主句是肯定句,则宾语从句的引导词可用if/whether. 如:I doubt if/whether he is a student. 当然,如果此宾语从句中含有or/or not时,只能使用whether. 如:I doubt whether he is a student or not. I doubt ...

double whether使用在否定句中

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...

在doubt疑问句“有疑问吗”和否定句“没疑问”或肯定句中作不信解时只能使用that Do you doubt that he will win the game?你对他赢得比赛有疑问么? I don't doubt that he will win the game.我毫不怀疑他会赢得比赛。 I doubt that he will win t...

名词doubt后面接同位语从句 (1)doubt用在肯定句中,后面接whether引导的同位语从句。注意不可以用if替换whether。例如: He had his doubts whether they would give him another chance to have a try. 他不能肯定他们是否会再给他一次机会试一...

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