Liên từ : and, but, so...
EX : She is doing her homework and I am planting trees.
You are kind so you help a lot of people.
He didn't try to study a lot but he got mark 10 in the last exam.
Một số liên từ: Although, And, So, Because, But,...
VD: - I am doing my homework and my sister is watching TV
- Although she is very tired, she still go to school
- I have headache so I must stay at home
- I can't buy a new car because it's expensive
- The weather was hot, but I didn't go swimming yesterday
* 1 số liên từ : and , even though , althought , but , because
*Ví dụ : I didn't go to school last Monday because I had a cold
I can't buy a dictionary because I don't have enough money
