notas de clase sobre tenses

Tenses
SIMPLE PRESENT
 USE:
When something happens repeatedly, how often something happens,
one action follows another, things in general. Future meaning:
timetables, programmes
 SIGNAL WORDS:
 Every day, sometimes, always, often, usually, seldom, never, first, then
 FORM:
Infinitive + he/ she/ it + s
But if we use a negative sentence we don’t add the s because it’s
already being added in doeSn’t
PRESENT CONTINUOUS
 USE
It’s use when something is happening at the same time of speaking or
close to it. Future meaning when you have arranged and decided to do
something
 SIGNAL WORDS
Now, at the moment, look! listen!
 FORM
To BE (am/are/is) + infinitive + ing
PAST SIMPLE
 USE
Action finished in the past most of the time it isn’t connected to the
present
 SIGNAL WORDS
Last..., …. ago, in 1990, yesterday
 FORM
Regular: infinitive + ED or verb in the second column
PAST CONTINUOUS
 USE
An action happened in the middle of an other action, someone was doing
something at a certain time(past) and you don’t know whether it was
finished or not
 SIGNAL WORDS
while
 FORM
Was/were + infinitive+ ing