1. The class watched a film yesterday. The film was about the Apollo 13 space mission.
=> The film ____________________________________________________________________
1. The class watched a film yesterday. The film was about the Apollo 13 space mission. => The film ___________________________________________________
By Autumn
`1` . The film which the class watched yesterday was about the Apollo 13 space mission.
`**` Đại từ quan hệ “which” thay cho “the film” ở đầu để bổ sung,mở rộng ý nghĩa cho “the film”
= > The film which the class watched yesterday was about the Apollo 13 space mission. ( Mệnh đề quan hệ )