| With a period of time
which has not yet ended |
today, this week, this
month, this century, this year |
I have read this book
today.
Have you read this article this
morning? |
| With an adverbs of
indefinite time of frequency |
always, ever, never,
since, yet,
just, now and ten, now and again,
from time to time, for, already |
I have never read
this book.
I have already read this book.
I have just read this book.
He has always preferred to go on
foot |
| In adverbial clauses of
time and real condition |
when
till
until
before
after
as soon
as + CLAUSE
as long as
if
unless
on condition that
providing/provided
in case |
Don't leave us until
you have spoken to my brother
I'll let you know in case he has
translated this text by 5 p.m.
|
| An action began in the
past and continued up to the present |
since +
Clause
for, since +Noun |
I have known her
since we came to this town.
She hasn't played the piano for
some days.
She has studied at this
Institute since 1999 |
