`46.` Did James Watt invent the steam engine?

`->` QKĐ : Did S V?

`->` Bị động QKĐ : Were/was S PII (by O)?

`47.` This is the most unusal festival she has seen.

`->` This is the adj-est/most adj N S have/has PII

`=` S have/has never PII before. 

`48.` I don't mind helping you repair the radio. 

`->` Not mind Ving : Không phiền làm gì

`49.` He climbed the tree in order to get a better views.

`->` S V in order to V : Để làm gì

`50.` No sooner had he finished school than he joined the army.

`->` No sooner had S PII than S Ved : Ngay khi .... thì .....

`6` Did James invent the steam engine?

`-` QKĐ: Did + S + V?

`-` invent (v): phát minh

`7` This is the most unusual festival she has ever seen.

`-` S + has/have + not/never + PII + so sánh hơn + ...  

`->` This is the + so sánh hơn nhất + S + has/have + PII 

`8` I don't mind helping you repair the radio.

`-` mind doing sth: phiền làm gì

`-` HTĐ: S + do/does + not + V

`-` be willing to do sth: sẵn sàng làm gì `->` not mind doing sth: không phiền làm gì

`9` He climbed the tree in order to get a better view.

`-` in order to do sth: để làm gì

`10` No sooner had he finished school than he joined the army.

`-` No sooner + had + S + PII + than + S + V (QKĐ): không lâu sau khi .... thì ...