要说Be careful not to break the glass when you use it资料书上面叫填空，开头就是take care 啊！语法没错，但表示“小心别。。。。” 时最好还是用系表结构 Be careful" 用take care 的很少，不是没有。take care当心, 小心He took care never to offend his visitors.他小心谨慎, 绝不得罪他的访客。