`11.` Thomas asked Jean if/whether he had seen his gloves.

`-` Hiện tại hoàn thành `->` Quá khứ hoàn thành

`12.`  I told Mary not to leave the window open.

`->` Câu tường thuật dạng mệnh lệnh: S + told + O + (not) to + V-inf

`13.` She said that she would have a cup of tea with me.

`-` Will -> Would

`14.` She said that she would pay him if she could.

`-` Will -> Would; Can `->` Could

`15.` She asked us what we were going to do the following summer.

`-` Is/Am/Are going to do + V-inf `->` Was/Were going to do + V-inf

`-` The next summer `->` The following summer

`16.` He told Jack that he would phone him the following day.

`-` Tomorrow `->` The following day; Will -> Would

`17.` Tom asked Jean if he could sit beside him/her

`-` Can `->` Could

`18.` He said that he wanted a camera for his birthday. 

`->` Hiện tại đơn `->` Quá khứ đơn

`19.` I asked him how long he was going to stay. 

`-` Is/Am/Are going to do + V-inf `->` Was/Were going to do + V-inf

`20.` She wanted to know if/whether I was going by train.

`-` Hiện tại tiếp diễn `->` Quá khứ tiếp diễn

`21.` She asked us not to use too much hot water.

`->` Câu tường thuật dạng yêu cầu: S + asked + O + (not) to + V-inf

`22.` She invited me to come to her party.

`->` Câu tường thuật dạng lời mời: S + invited + O + (not) to + V-inf

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Câu tường thuật

`->` S + say(s)/said/(tell/told +O) + (that) + S + V (lùi thì)

Câu tường thuật dạng Yes/No questions

`->` S + asked/wanted to know/wondered + if/whether + S + V (lùi thì)

Câu tường thuật dạng Wh-questions

`->` S + asked (+O)/wanted to know/wondered + Wh-questions… + S + V (lùi thì)