`EX1)`

1. My mother was cooking dinner when my father came home last night.

QKTD + when + QKĐ; hđ đang diễn ra trong quá khứ thì có hđ cắt ngang

2. She told me that she was reading a book about future ways of communication then.

S + told + O + (that) + S + V (lùi thì)

HTTD → QKTD

now → then

3. While I was cleaning out my cupboards, I found these photos.

While  +QKTD, QKĐ: hđ đang diễn ra trong quá khứ thì có hđ cắt ngang

4. As soon as we saw the fire, we immediately called the security guards.

As soon as +clause, clause: ngay khi

5. You should make a shopping list before you go shopping.

Clause + before + clause: trước khi

6. My teacher said that all the students would have a meeting the next week.

S + said (that) + S +V (lùi thì)

will → would 

next week → the next week/ the following week 

`EX2)`

1. Many people think translation machines will replace human translators in the future.

Many + N số nhiều, đếm được 

S + think(s) + S+ will + v1 

DHNB: in the future (TLĐ) 

2. Our manager usually uses Google Meet to make video conferences.

DHNB: usually (HTĐ)

S + V1/s/es; thì HTĐ 

use sth to do sth: sử dụng gì để làm gì