我没有男朋友。
错误：I have no boyfriend.
正确：I don't have a boyfriend.
他的身体很健康。
错误：His body is healthy.
正确：He is in good health.
He's healthy.
价钱很昂贵/便宜。
错误：The price is too expensive/cheap.
正确：The price is too high/ rather low.
我们下了车。
错误：We got off the car.
正确：We got out of the car.
。