`1`. She has worked as a secretary for five years.

`-` Cấu trúc: S+ began/ started+ to V/ Ving+....+| khoảng thời gian+ ago

                                                                             | in+ năm/ when+ S1+ V1+...

`≈` S+ have/ has+ Vpp+...+| for+ khoảng thời gian

                                            | since+ mốc thời gian/ since+ S1+ V1

`2`. She reminded him not to forget to phone the office.

`-` S+ told+ O+ to V/ not to V/ Don't+...

`≈` S+ remind (/ động từ đề nghị khác)+ O+ to V/ not to V

`3`. The furniture was too expensive for me to buy it.

`-` Cấu trúc: Quá... rằng: N+ be ( thì)+ so+ adj+...+ that+...

`≈` Cấu trúc: Quá đến nỗi không thể (Câu có 2 chủ ngữ) : N+ be ( thì)+  too+ adj+ for+ O+ to+ V

`4`. In case you may get hungry on the train, you’d better take some sandwiches.

`-` Cấu trúc: In case+ S+ V, câu mệnh lệnh

`-` had better: nên làm gì ( `=>` dùng cho câu mệnh lệnh)

`5`. Do you mind helping put the chairs away.

`-` Do you mind+ Ving: Bạn có phiền khi làm

`1.` She has worked as a secretary for five years

`=>` Thì hiện tại hoàn thành

`=>` DHNB: for

`=>` S + have/has(not) + Vpp + O

`2.` She reminded him not to forget to phone the office

`=>`  S+ remind + O + not to + V

`3.` The furniture was too expensive for me to buy it

`=>` N+ was/were+ too + adj + for + O + to V

`4.` In case you may get hungry on the train, you’d better take some sandwiches. −

`=>` In case + S + V, mệnh lệnh

`5.` Do you mind helping put the chairs away

`=>` Would/Do you mind + Ving