`1.` David said that robots could never replace human beings.

HTĐ -> QKĐ

Lùi thì : can -> could

- Câu tường thuật : S + said ( to O ) / told ( O ) + ( that ) + S + V-lùi thì

`2.` The man was attracted by the car's battery and its interior design.

- Bị động quá khứ đơn : S + was/were + V2/V-ed + ( by O )

- find sth adj : nhận thấy cái gì như thế nào 

`3.` When I arrived in Da Nang , I made a video call home.

- rút gọn mệnh đề = V-ing

- When + S + V2/V-ed , S + V2/V-ed - diễn tả 2 hành động xảy ra liên tiếp trong quá khứ

`4.` She told me that I had to study harder if I wanted to be a doctor.

HTĐ -> QKĐ

Đổi ngôi : you -> I

Lùi thì : have to -> had to

            want -> wanted

- Câu tường thuật : S + said ( to O ) / told ( O ) + ( that ) + S + V-lùi thì

`5.` My friend said "Scientists will explore Mars in the near future".

TLĐ -> TLĐTQK

Lùi thì : will -> would

- Câu tường thuật : S + said ( to O ) / told ( O ) + ( that ) + S + V-lùi thì

`6.` Video call makes it possible for us to see our loved ones every moment.

- S + can + V-inf : ai đó có thể làm gì

- make it possible ( for sb ) to do sth : làm ( cho ai ) có thể làm gì

`7.` It took us two hours to upload our video files to Youtube.

- S + spend(s)/spent + time + V-ing : ai dành bao nhiêu thời gian làm gì

- It + take(s)/took + sb + time + to V  : Nó mất ai bao nhiêu thời gian để làm gì

`8.` She suggested that I should swap the bookcase for the TV.

- S + suggested + ( that ) + S + ( should ) + V-inf

`9.` Tom told me that most people would use flying cars.

TLĐ -> TLĐTQK

Lùi thì : will -> would

- Câu tường thuật : S + said ( to O ) / told ( O ) + ( that ) + S + V-lùi thì

`10.` Han said that she was planning to send her friend an email.

HTTD -> QKTD

Đổi ngôi : I -> she

Lùi thì : am planning -> was planning

my -> her

- Câu tường thuật : S + said ( to O ) / told ( O ) + ( that ) + S + V-lùi thì