Omission of 'if'?

2013-04-24 5:41 pm
Today I heard my lecturer said:

I am not sure I will understand

But I think the correct (grammatical correct) way of saying this should be

'I am not sure IF/ WHETHER I will understand'

The complementizer 'if/ whether' seems to be omitted. Which sentence do you feel right grammatically?

回答 (3)

2013-04-25 1:27 pm
✔ 最佳答案
Yes you are correct. Here "if" is omitted.
2013-04-25 12:46 am
They are both grammatically correct.
參考: Me from UK
2013-04-25 12:42 am
neither of those are grammatically incorrect


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