1. Ba drew that picture by himself.
`=>` himself: tự bản thân anh ấy
2. We came here last week.
`=>` Chúng tôi đến đây vào tuần tới.
3. I haven't seen him for one year.
`=>` It is + thời gian + since + S + last + V2/ed = S + have/has + not + Vpp + for + khoảng thời gian
4. Because Hoa watched TV late last night, she went to school late this morning.
`=>` Because + S + V = Because of + N/Ving: bởi vì
5. Be isn't interested in watching TV in his free time. ( sửa đề )
`=>` be interested in + N/Ving: thích
6. Lan will be fifteen next week, won't she?
`=>` Câu hỏi đuôi thì tương lai đơn, vế trước khẳng định vế sau phủ định
7. When did you start to use to the pen?
`=>` start + to V/Ving: bắt đầu