Ai giúp mình với ạ He was punished because of his behaviour = Had he ........................

`=>`  Had he not behaved badly, he wouldn't have been punished.

`-` Câu đảo ngữ điều kiện loại 3:

`-` Cấu trúc: Had + S1 + (not) + Vpp, S2 + would/might/could… + have + Vpp

`->` Chuyển sang câu điều kiện loại `3` : If + S + had + P2, S + would/could + have + P2 

`=>` If he hadn't behaved badly, he wouldn't have been punished

`->` Cấu trúc đảo ngữ câu đk loại `3` : Had + S + ( not ) + P2 , S + would/could have + P2.

`=>` Đáp án : Had he not behaved badly, he wouldn't have been punished.