People don't use this road very often.->this road isn't used very often(by people)-bị động thì htđ:is/are(not)+Ved/c3
Somebody accused me of stealing money->i was accused of stealing money(by somebody)-bị đọng thì qkđ:was/were+ Ved/c3
How do people learn languages?->how are languges learnt(by people)?-bị động thì htđ:is/are(not)+Ved/c3
những từ như by people,by someone,by somebody,by them,by us,...có thể bỏ trong câu bị động