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`Đáp` `án:`
`color{red}{~1~}`
be - was/were - been
come - came - come
go - went - gone
ask - asked - asked
have- had - had
catch - caught - caught
put - put - put
wash - washed - washed
drive - drove - driven
`color{red}{~2~}`
a. went
DHNB: yesterday morning (QKĐ)
b. have seen
c. had
DHNB: last summer (QKĐ)
d. did / đo
DHNB: last night (QKĐ)
e. came
DHNB: ago (QKĐ)
f. haven't seen
DHNB: for 3 months (HTHT)
g. lived
DHNB: in 1999(QKĐ)
h. have / waited
DHNB: for half an hour (HTHT)
i. didn't want / was
`color{red}{~3~}`
a. did you learn → have you learnt
b. Đúng
c. didn't → haven't
DHNB: yet (HTHT)
d. talked → have talked
e. when → since
HTHT + since + QKĐ
`color{red}{~4~}`
a. A
DHNB: last week (QKĐ)
b. B
DHNB: since Saturday morning (HTHT)
c. D
DHNB: yesterday (QKĐ)
-------------------------------------------------
Công thức thì HTHT
(+) S + has/have + V3/ed
(-) S + has/have + not + V3/ed
(?) Has/Have + S+ V3/ed?
DHNB: before, since + mốc thời gian, for + khoảng thời gian, yet, already, just,....
Công thức thì QKĐ (V: to be)
(+) S + was/were +adj/N/O
(-) S + was/were + not +adj/N/O
(?) Was/Were + S +adj/N/O ?
S số ít, I, he, she, it + was
S số nhiều, you, we ,they + were
Công thức thì QKĐ (V: thường)
(+) S + V2/ed
(-) S + didn't + V1
(?) Did + S+ V1?
DHNB: ago, last (year, month ...), yesterday, in + năm QK, ...
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