`1.` By the time Peter came at `7p.m`, I had left at `6p.m`

`->` By the time + S + Ved/V2, S + had + P2

`2.` John does a lot of household chores and so does Peter.

`->` clause + and + so + aux + S: cũng...

`3.` Jack always goes to bed early.

`->` always `->` thì HTĐ: `(+)` S + V-(s/es)

`1.` By the time Peter came at 7 pm, I had left at 6 pm.

`-` By the time + QKĐ (S + V2/ed), QKHT (S + had + V3/ed): Vào lúc mà

`->` Diễn tả hành động đã xảy ra và hoàn thành trước hành động khác trong quá khứ

`2.` John does a lot of household chores and so does Peter.

`-` Clause (S + V + O) + and + so + trợ động từ/ tobe/ modal verb + S

`->` Ai đó cũng vậy

`3.` Jack always goes to bed early.

`-` Thì HTĐ: `(+)` S + V(s/es) `->` DHNB: always

`-` Vì "Jack" là S số ít `->` V phải thêm "s/es"