同义词是be carefull,take care,表示当心、小心的意思,例如:

1、Above all, be carefull of what you say to her.首先,要注意你对她的言论。

2、' be carefull with that,'paul warned her.“用那玩意儿要当心点!”保罗警告她说。

3、Take care you don't drink too much!当心别喝得太多!