I was not sure/certain what I ought to do.为什么这样was not可以是I am not sure /certain what I ought to do.

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I was not sure/certain what I ought to do.为什么这样was not可以是I am not sure /certain what I ought to do.
I was not sure/certain what I ought to do.
为什么这样was not
可以是I am not sure /certain what I ought to do.

I was not sure/certain what I ought to do.为什么这样was not可以是I am not sure /certain what I ought to do.
我不确定我该做什么.
was过去式 sure的否定式就是前面be加not啊.请问要的是这个解释么?ps:可以啊

我不确定 我该做什么。
be not sure/ certain 不确定。
当然可以用I am sure 只是I was 是过去确定， I am 是现在确定

I was not sure/certain what I ought to do.为什么这样was not可以是I am not sure /certain what I ought to do. I'm not sure I was not sure if he was really interested or if he____polite.为什么用will j I am not sure是什么意思 Er...i am not sure. I'm not sure 快 I'm not sure yet. I'm not sure()( 至今) Shall I buy that robots she was not sure 用宾语从句改写句子 I am not sure what lay behind their remarks,but it was not good will.求翻译 I'm sure I am not wrong Who won the()800-meter race.I'm not sure.It was difficult().(boy)(see)用正确形式Who won the()800-meter race.I'm not sure.It was difficult().(boy)(see)用正确形式 i am not sure反义疑问句 I am not sure what your talking 翻译成中文：I am not sure i am not sure 什么意思 I am not sure同义句 maybe.but I am not sure.