Bài `8:`

`1`. These machines are used to mix the ingredients by chefs.

`=>` Câu bị động với "use" hiện tại: S + is/am/are + used to V

`2`. Their results are not the same as our results.

`=>` be not the same as = different

`3` I haven't spoken to David since Christmas.

`=>` The last time + S + V2/ed + was + ...

`=` S + have/has + not + Vpp + ...

`4`. I think jazz music isn't as popular as rock music.

`=>` So sánh không bằng: S + be + not + as + as + O

1. These machines are used by chefs to mix the ingredients (bị động HTĐ: am/is/are + Vp.p)

2. Their results are not the same as ours/our results (different: khác >< same: giống; the same as (+N): giống với)

3. I haven't spoken to David since Christmas (The last time + S + V_ed/2 + was + giới từ + mốc thời gian = S + have/has + not + Vp.p + since + mốc thời gian)

4. I think jazz music isn't as popular as rock music (S1 + tobe + comparative adjective + than + S2 = S2 + tobe + not + as/so + adj + as + S1)