第 66 课: 我赢了-2

This was done in the distant past. 很久以前，人们这样做。

This is done now. 现在人们这样做。

This could be what is done in the future. 将来人们可能这样做。

This was done in the recent past. 不久以前，人们这样做。

This person needs to see a dentist. He has a toothache. 这个人需要看牙医，他牙痛。

This person needs to see a doctor. He has a fever. 这个人需要看医生，他发烧了。

This man is a doctor. 这个人是医生。

This man is a dentist. 这个人是牙医。