`17` The lesson will be explained to us by the teacher tomorrow.

`-` Bị động TLĐ: S + will (not) + be + PII (by O)

`18` She wasn't invited to his birthday party.

`-` Bị động QKĐ: S + was/were + (not) + PII (by O)

`-` S số ít `->` wasn't

`19` A new school is going to be built in our district.

`-` Bị động TLG: S + is/am/are + (not) + going to + be + PII (by O)

`20` He wasn't given more information.

`-` Bị động QKĐ: S + was/were + (not) + PII (by O)

`-` S số ít `->` was

`-` nobody: không một ai `->` mang nghĩa phủ định `=>` wasn't

`-` give `-` gave `-` given: đưa, cho

jqka.