HSK 4 HSK V2
Correct

以为

/ yǐwéi / 
Strokes

Definition

to think (i.e. to take it to be true that ...) (Usually there is an implication that the notion is mistaken – except when expressing one's own current opinion.)

Example

As a Verb

think; believe; consider

1
Wǒ
我
yǐwéi
以为
zhè
这
bù
不
kěnéng
可能
  
。

I don't think it possible.

2
Nǐ
你
zhōngyú
终于
lái
来
le
了
  
!
Wǒmen
我们
hái
还
yǐwéi
以为
nǐ
你
bù
不
lái
来
le
了
ne
呢
  
!

There you are at last! We'd given you up.

3
Yǐwéi
以为
zìjǐ
自己
liǎobuqǐ
了不起

be haughty/cocky; be overweening/swellheaded