1. Preposition of time.
+ in
Season (in the winter)
Year (in 2010)
Month (in December)
+ on
Date, month, year (on
December 17
th
, 2010

)
Day (on Friday)
Date (on 17
th
)

1. Preposition of time.
+ at
+ for
+ since
+ from … to/up to
(from Monday to Friday)
(between 4a.m and 6a.m)
+ between … and
Time (at 10 a.m, at night,…)
a period of time (for 5 weeks)
a point of time (since last week)

S + V / V-s/es
+ am / is / are

Present progressive
S + am / is / are +V-ing
will /shall + V
(bare)

may/ can + V
(bare)
must + V
(bare)
a. Change in tenses
Past simple
S + V-ed / V-c2
+ was / were
Past progressive
S + was / were +V-ing
would /should + V
(bare)
might/ could + V
(bare)
had to + V
(bare)

this
these
now
here
today