1. I will pick you up right after you get off the train.

→I will pick you up as soon as  you get off the train. (SOON)

`-` S`+`will`+`V

`-`As soon as `+` S `+` V (present), S `+` will `+` V`.`

→hai hành động chưa xảy ra tại thời điểm nói.

`2.` 2. By supporting green products, you will reduce harm to the environment.

If you support  green products, you will reduce harm to the environment. (SUPPORT)

`-`Cđk loại I: If+ S+V,S+will+V`.`

`3.` The rich girl doesn't often check price tags when buying brand-name clothes.

→The rich girl rarely checks price tags when buying brand-name clothes. (RARELY)

`-`rarely: hiếm khi= not often

`4.` During their dinner time, a flash flood swept through their house.

→While they were having dinner, a flash flood swept through their house. (WHILE)

`-` While+S+was/were+doing, S+was/were+doing`.`

→Để nói về 2 hành động xảy ra dồng thời`.`

5. There was heavy snow between 8 p.m. and 11 p.m. yesterday.

→It was snowing heavily  at 10 p.m. yesterday. (SNOWING)

`-`Thì QKTD: S+ was/were +Ving 

`-` Dấu hiệu nhận biết: có giờ cụ thể `.`→Dùng QKTD