take care 后面接不定式或动名词都可以，但用法不同。

1. 后接不定式，意思是“注意要做某事”。如：

Take care to avoid kinking the wire. 当心别让电线扭结。

Take care to follow the instructions. 仔细按照用法说明。

We must take care to get the right kind of frame to set off the picture. 我们要注意选择合适的镜框来衬托出这幅画。

2. 后接现在分词，意思是“在做某事时要小心”。如：

Take care crossing the street. 过街道要小心。

It’s very icy; you should take care driving home. 路面有冰，你开车回家时要小心。

   Take care to ensure that the ladder is steady before you climb it . 爬梯子前要当心，确保梯子放稳了。（摘自《朗文当代高级英语辞典》第5版）