be careful about
1.迷恋某人
2.小心,注意
be careful with
1.照顾；对…过细地
2.小心
3.小心；当心
4.对…小心／认真
be careful of
1.当心…对…仔细
2.爱惜,注意
3.当心,注意,仔细
4.当心,小心