7 The Parkers have never tasted Italian food before.
-It is the first time + S+ have/has+PII+........
= S+have/has+never+PII+.....+before
8 I have never seen a more impressive artwork than this before.
-It is the + most long-adj/short-adj-est + N + (That)+S+have/has+(ever)+PII
= S+have/has+never+PII+(a)+more long-adj/short-adj-er+N+than+this (one/N)+before
9 The children used to be taken to the circus when they were 5.
-Chủ động: S+used to + V +............
-Bị động: S+used to + be PII+.....
-Used to: Đã từng
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