careful的比较级是more careful,最高级是the most careful。careful的意思是小心;注意;谨慎;细致的;精心的;慎重的。careful用作表语时,其后也可跟动词不定式、that从句。careful和about连用是“小心”的意思,通常后接指物的名词、动名词或从句。
例句:
Careful on those stairs。走那几段楼梯要当心。
You have to be careful what you say on telly。在电视上说话时你必须很谨慎。
I asked her to be more careful in future。我要她以后更加小心。
Can\’t you be a bit more careful with my bike?你骑我的车就不能更小心点吗?
Such an occasion demands the most careful consideration。这样的场合需要最周到的考虑。
We all think he is one of the most careful students in his class。我们都认为他是班里最细心的学生之一。
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