`-` After + S + had + VpII , S + Ved / V2

`-` Before + S + Ved / V2 , S + had + VpII

`-` When + S + Ved / V2 , S + had + VpII

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

`=>` Dùng để diễn tả hành động xảy ra trước trước khi có hành động khác xảy ra

`1`.After David had gone home , we arrived

`2`.Before we took a look around the shops , we had had lunch

`3`.When we got out of the office , the light had gone out

`4`.By the time we started our work , she had explained everything clearly

`5`.Before my mother came home , my father had watered all the plants in the garden

`\text{# TF}`

$\text{1. }$After David had gone home, we arrived

$\text{2. }$Before we took around the shops, we had had lunch.

$\text{3. }$When we got out of the office, the light had gone out

$\text{4. }$By the time we started our work, she had explained everything clearly.

$\text{5. }$Before my mother came home, my father had watered all the plants in the garden

- Cấu trúc liên quan:

1. After+ S+ had+ V_ed/ bqt, S+ V_ed/ bqt

- Vế "after" chia thì quá khứ hoàn thành, vế còn lại chia quá khứ đơn

2. Before+S+ V_ed/ bqt, S+ had+ V_ed/ bqt

- Vế "before" chia quá khứ đơn, vế còn lại chia quá khứ hoàn thành

3. By the time+ S+ V_ed/ bqt, S+ had+ V_ed/ bqt

- Vế " by the time" chia quá khứ đơn, vế còn lại chia quá khứ hoàn thành

$\textit{# Themoonstarhk}$