他完全不看场合和别人眼色，说话常常得罪人。

Tā wánquán bú kàn chǎnghé hé biérén yǎnsè, shuōhuà chángcháng dézuì rén.

He completely ignores the situation and other people’s expressions, and often offends others when he speaks.

你没看懂老师的眼色吗？他是在提醒你别说话。

Nǐ méi kàndǒng lǎoshī de yǎnsè ma? Tā shì zài tíxǐng nǐ bié shuōhuà.

Didn’t you understand the teacher’s look? He was reminding you not to talk.