be careful的否定句

be careful的否定句 Be careful.的否定句是 be careful .(否定句） Be careful.(否定句,意思不变) Be careful next time的同义句 Be careful的同义句 _be_ You'd better be more careful with your work.(改为否定句） be careful to do STh否定句be careful not doSTh为何不可以是don,t be careful to do STh.另外don,t careful to do STh对吗? Be careful!Acar is coming.的同义句 Be careful next time.同义句 be careful,jack!变为同义句 Be careful,please?改成强调句 be careful with 和be careful about的区别是什么 don't be careful和be not careful的区别 请问：be careful with和be careful of的区别 be careful to 与 be careful with 的区别 be careful doing和be careful to do的区别? be careful of和 be careful with的区别,造句