3 sentences for 愣 (lèng — staring blankly)

1. 他愣了半晌才反应过来。

   tā lèng le bàn​shǎng cái fǎn​yìng guò​lái.

   He stared blankly for quite a while before he reacted.

   Source: Dong Chinese Dictionary

2. 他愣了一下，没有反应过来。

   tā lèng le yī​xià, méi​yǒu fǎn​yìng guò​lái.

   He was stunned for a moment and didn't react.

   Source: Dong Chinese Dictionary

3. 他先是愣了一下，继而大笑起来。

   tā xiān shì lèng le yī​xià, jì'ér dà​xiào qi​lai.

   He was stunned for a moment, then burst out laughing.

   Source: Dong Chinese Dictionary