`31.`Nam offered to clean the windows for Mai.

`->`offer + to V : đề nghị làm gì....

`=>`Tạm dịch : Nam đề nghị được lau cửa sổ cho Mai.

`32.`Meat isn't as expensive as fish in some areas of the country, is it?

`->`So sánh không bằng với Adj : S1 + be + not as Adj as + S2

`->`Câu hỏi đuôi : S + be + Adj...., be not + S ?

33.The last time Hoa was seen was on her birthday.

`->`The last time + S + V2/ed + was + time

`->`Bị động với quá khứ đơn : S + was/were + Vpp + (by O)

`34.`The boys would rather play soccer than stay indoors.

`->`S + prefer(s) + Ving + to Ving : thích làm gì hơn làm gì

`=`S + would rather + V + than + V

`35.`Nam doesn't like chocolate cakes and his parents don't, either.

`->`S1 + do/does/did not + V + and + S2 + don't/doesn't/didn't, either

`=>`Tạm dịch : Nam không thích bánh sô cô la và bố mẹ anh ấy cũng không.

`36.`That old house has just been sold.

`->`Bị động với hiện tại hoàn thành : S + have/has + been Vpp + (by O)

`37.`The cake was so hard that I couldn't eat it.

`->`S + be + so Adj + that + S + V : quá...đến nỗi mà...

`38.`It took two hours to fly from Ha Noi to Ho Chi Minh city.

`->`It took + O + time + to V

`39.`John advised Mary not to lend that man any more money.

`->`advise sb not to V : khuyên ai không nên làm gì

`=>`Tạm dịch : John khuyên Mary không nên cho người đàn ông đó vay tiền nữa.

`40.`How long have you learnt English ?

`->`When + did + S + V ?

`=`How long + have/has + S + Vpp ?