` Answer : `
` *** #Hoidap247# *** `
$\color{#1C1C1C}{N}$$\color{#363636}{h}$$\color{#4F4F4F}{a}$$\color{#696969}{t}$$\color{#828282}{H}$$\color{#9C9C9C}{h}$$\color{#B5B5B5}{u}$$\color{#CFCFCF}{y}$$\color{#E8E8E8}{y}$$\color{#FFFFFF}{<33}$

` -----------`

` - ` CT While `/` When : While `/` When `+` Simple Past (Thì QKĐ), Past Continuous (Thì QKTD).

` -> ` Diễn tả một hành động đang diễn ra (hành động dài) trong QK thì một hành động khác xen vào (hành động khác).

` @`  Trong đó :

` - ` Hành động đang xảy ra chia ở thì quá khứ tiếp diễn, hành động xen ngang chia ở thì quá khứ đơn.

` -----------`

` bb1. ` was listening `-` heard
` bb2. ` said `-` was still trying
` bb3. ` was dancing `-` fell `-` broke
` bb4. ` was playing `-` called
` bb5. ` was looking `-` noticed

` ----------------------- `

` *** ` CT Thì QKTD:
` @ ` Với VTobe:
` (+) ` S `+` was `/` were `+` V `-` ing
` (-) ` S `+` wasn’t `/` weren’t `+` V`-`ing
` (?) ` Was `/` Were `+` S `+` V`-`ing `?`
` @ ` Trả lời:
Yes, S `+` was `/` were hoặc No, S `+` wasn’t `/` weren’t.
` *** ` Dạng câu hỏi : Wh`-`word `+` was `/` were `+` S `+` V`-`ing `?`

` -__-__-__-__-__-__-__-__-__-__-__-__-__-__-__-__-__-__-__- `

 ` *** ` CT Thì QKĐ
` @ ` Với VTobe :
` (+) ` S `+` was `/` were ` + ` O (Adj`/`N)
` @ ` Trong đó :
S `=` I`/` He`/` She`/` It`/` N số ít `+` was
S `=` We`/` You`/` They`/` N số nhiều `+` were
` (-) `S + was `/` were `+` not
` @ ` Trong đó :
Was not `=` wasn’t
Were not `=` weren’t
` (?) ` Was `/` Were `+` S `+` O `?`
` *** ` Dạng câu hỏi : Wh`-`word `+` Was`/`Were `+` S `+` V`-`inf ` + ` O `?`
` ----------------------- `
` @ ` Với V thường :
` (+) ` S `+` V2`/-` ed `+` O
` (-) ` S `+` did not ` + ` V`-`inf
` (?) ` Did `+` S `+` V`-`inf `?`
` *** ` Dạng câu hỏi : Wh`-`word `+` Did `+` S `+` V`-`inf ` + ` O `?`
` ----------------------- `
` - DHNB : ` Yesterday
` + ` Ago `+` Time (Trong quá khứ)
` + ` Last `+` week`/` year`/`month
` + ` In the past
` + ` The day before
` + ` Những khoảng thời gian đã qua trong ngày : Today, this morning, this afternoon, this evening...

` #Pyyx# `