1. They sell T-shirts at the gate of the tourist site. 2. They will install a network of wind turbines to generate electricity. 3. In the countryside, people will burn plants to produce heat. 4. We will reduce energy consumption as much as possible. 5. We will develop a powerful company. 6. We will use solar energy to solve the problem of energy shortage. 7. They reconstructed the temple in 1903. 8. Thousands of people visit Ho Chi Minh Mausoleum every day. 9. I don't invite her to join the party.

`1`. T-shirts are sold at the gate of the tourist site by them.

`2`. A network of wind turbines will be installed by them to generate electricity.

`3`. In the countryside, plants will be burned to produce heat.

`4`. Energy consumption will be reduced by them as soon as possible.

`5`. A powerful company will be developed by them.

`6`. Solar energy will be used by them to solve the problem of energy shortage.

`7`. The temple was reconstructed by them in 1930.

`8`. Ho Chi Minh Mausoleum is visited by thousands of people every day.

`9`. She is not invited by me to join the party.

`-` Cấu trúc chung : Câu khẳng định

`(+)` Active voice: S1+ V(thì)+ O2+ adv( place)+ adv ( time)

→Passive voice: S2+ be ( thì)+ Vpp+ adv ( place)+ [by+O1]+ adv ( time)

`-` Cấu trúc chung: Câu phủ định ( câu 9)

`(+)` Active voice: S1+ do/ does/ did+ not+ V+ O2+ adv ( place)+ adv ( time)

→Passive voice: S2+ is/am/are/ was/ were+ not+ Vpp+ adv ( place)+ [by+O1]+ adv ( time)

`-` Cấu trúc câu 1, 8: (thể bị động, thì HTĐ)

S+ is/am/are+ Vpp

`-` Cấu trúc từ câu 2→6: ( thể bị động, thì TLĐ)

S+ will be+ Vpp

`-` Cấu trúc câu 7: (thể bị động, thì QKĐ)

S+ was/ were+ Vpp