Negative Form: Sj + did + not + Infinitive
Interrogative: Did + Sj + Infinitive ?
We use Past simple: to refer to
definite time in the past (when we
specify the time or how long) and
usually with past time expressions
such as yesterday, two weeks
ago, last year, in 1995
TIME EXPRESSIONS: Last
(day, month, year, week ...),
Yesterday, The other day, The
day before, Ago
Present Perfect
We use Present Perfect: to talk about
time up to now, that is, events that took
place in the past but which connect with
the present. The present perfect is often
used with time expressions which indicate
time up to now, for example today, this
year, in the last six months:
TIME EXPRESSIONS: Since 1980, since
July, for ten years, for three days, this
week, this month, this year, just, yet,
already, recently, ever, never
Sj + HAVE/HAS + Past participle -ED
/Third form irregular verbs
Negative: Sj + haven't / hasn't +
past participle -ED