be careful of后加什么？

be careful of 意为注意,小心， 后接名词,动名词或从句；

例句

Be careful of the traffic.

They had to be careful of floating chunks of ice.

Be careful of your health.

careful

adj.小心;注意;谨慎;细致的;精心的;慎重的；

Word always gets out no matter how careful you are.

无论你多么小心，总会有消息走漏。

Be careful you don\'t trip up on the step.

你小心别在台阶上绊倒了。

Be careful you don\'t knock your head on this low beam.

小心，别把头撞在这矮梁上。

Be careful not to cross the line.

小心别越过道路的中界线。

Please be more careful in future.

今后请多加小心。