`10.` They said that they had had a wonderful time in that beach the day before 

`11.` The policeman told me to put the trash in the garbage bins

`12.` Hoa told me that if I answered the questions correctly, I might win them 100

`13.` He told me that he hadn't given that document to me the day before 

`14.` My teacher of Geography said that the Earth moved around the sun

`15.` He asked boys what they were doing then

`16.` Nga asked Tan to take those pictures to her room

`17.` The teacher advise me to concentrate on my study at school

`18.` She told me that that baby looked so cute

`19.` Mom told me to post that letter for her

`20.` Hoa asked Ba to help her with English speaking

*Statement:

S + said + (that) + S + V_lùi thì

S + said + to + O + (that) + S + V_lùi thì

S + told + O + (that) + S + V_lùi thì

*Yes - No question: S + asked + (O) + if/ whether + S + V_lùi thì

*Wh - question: S asked + (O) + question word + S + V_lùi thì

*Commands: S + told/ asked + O + (not) + to + V_inf

*Lùi thì:

Quá khứ đơn → Quá khứ hoàn thành

Hiện tại đơn → Quá khứ đơn

Hiện tại hoàn thành → Quá khứ hoàn thành

Hiện tại tiếp diễn → Quá khứ tiếp diễn

Quá khứ tiếp diễn → Quá khứ hoàn thành tiếp diễn

Hiện tại hoàn thành tiếp diễn → Quá khứ hoàn thành tiếp diễn

will → would

can → could

may → might 

must → had to

shall → should

is/ am/ are going to → was/ were going to