1. She said that she had been working there for five years.

2. They said that they didn't want to discuss that matter again.

3. He told me he hadn't study hard, so he had failed the exam years before.

4. He said that the secretary hadn't finished typing the letter yet.

5. They said that tehy had been walking when they had seen the terrible accident.

6. He told us he was helping his father paint that wall right then.

7. He said that she was is the most intelligent woman he had ever met.

8. He told me the flight to Canada had been cancelled the day before evening.

9. He said that he was going to start his own photography business the following month, so then he needed my help.

10. Susan said that I didn't know what Bob was doing

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*Yes/No - question:

S + asked/ wanted to know/ wondered + (O) + if/ whether + S + V (lùi thì)

*WH-words:

S + asked/ wanted to know/ wondered + (O) + WH-words + S + V (lùi thì)

Thì hiện tại đơn -> Thì quá khứ đơn 

Thì hiện tại tiếp diễn -> Thì quá khứ tiếp diễn

Thì quá khứ đơn ->  Thì quá khứ hoàn thành

Thì quá khứ tiếp diễn -> Thì quá khứ hoàn thành tiếp diễn

Thì hiện tại hoàn thành -> Thì quá khứ hoàn thành

Thì hiện tại hoàn thành tiếp diễn -> Thì quá khứ hoàn thành tiếp diễn

Can -> could

May -> might

Must ->  must/had to

*Đổi ngôi:

+ Đại từ nhân xưng

I -> He, She

We -> They

You -> I, we

+ Đại từ sở hữu

Mine ->  His, her

Ours  -> Theirs

Yours -> Mine, ours

*Tính từ sở hữu

My -> His, her

Ours -> Their

Your -> My, our

*Tân ngữ

Me -> Him, her

Us -> Them

You -> Me, us

*Trạng từ:

This -> That

These -> Those

Here -> There

Now -> Then

Today -> That day

Yesterday -> The day before

Tomorrow -> The day after

Ago -> Before

This week -> That week

Last week -> The week before

Next week -> The next week/ The following week