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Correct

是否

/ shìfǒu /
Strokes

Definition

whether (or not)/if/is or isn't

Example

As an Adverb

whether or not; whether; if

1
xiǎng
zhīdào
知道
men
我们
shìfǒu
是否
yào
需要

I want to know whether we need it.

2
zhīdào
知道
shìfǒu
是否
yīnggāi
应该
gào
告诉

I wonder if I ought to tell you.

3
shìfǒu
是否
yuàn
愿意
,
hái
qīngchu
清楚

I am not yet clear whether she is willing or not.

4
shìfǒu
是否
huì
lái
?

Is he coming?

5
Shìfǒu
是否
shǔshí
属实

whether or not it is true