I was 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.

云灵飞狐 1年前已收到2个回答举报

电磁场微波天线幼苗

共回答了18个问题采纳率：88.9% 举报

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

1年前

水上的飞鸟幼苗

共回答了1224个问题举报

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

1年前

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