be careful with和beware的区别

be careful with是对某某小心点的意思，而beware则是谨防的意思，区别可以从以下例子看出：

Please be careful with this house, as there is a big dog in this house, beware of this. I am bit scared. 请小心这所房子，因为这所房子里有一只大狗，要谨防点。 我有点害怕。