I am a simple man
The problem is very simple
This is an organic compound
That is a compound word easy to understand
I think this is a very complex question
The technique here is too complicated
P/s: Có lẽ sai...
Simple
1/ I went to the supermarket yesterday.
2/ My brother ate a sandwich and drank beer.
Compound
1/ My father is a doctor, and my mother is a writer.
2/ We missed the bus, so we came to work late.
Complex
1/ His father is a doctor, and/but his mother is a writer.
2/ We missed the bus, so we came to work late.