【例句】Tom is always saying such stupid thing. He has a real talent for putting his foot in his mouth.【误解】汤姆总是说这样的傻话。

他有把脚放进嘴里的才能。

【正确】汤姆总是说这样的傻话。

他真是祸从口出。

【说明】put one's foot in one's mouth意思是“祸从口出”、“做错事”，这里的foot不可换作feet。