|- It normally means "look after" or "take responsibility for".|
a) Mothers take care of their children especially when they are young.
--> In this sentence it means that the mothers look after their children they are young.
|b) Its not good to give your grandfather a dog, he is too old to take care of it well.|
--> In this sentence it means the grandfather is too old to take responsibility over the dog.
|c) Ms. Ito takes care of production, and I'm responsible for marketing.|
--> In this sentence it means that Ms. Ito is looking after and is responsible for production.
|- Without preposition, it means be careful.|
a) Take care in going to the office, Mom.
b) You must take care of snakes in the forest.
--> In these sentences, take care means be careful. Be careful in going to the office and be careful of snakes in the forest.
|- For some people, this formula is used when saying goodbye.|
a)Bye Tomo! Bye Mika! Take care!
b)You all take care! See you tomorrow class.
--> In these sentences, take care means goodbye.