现在完成时课件.ppt

The present perfect tense
过去分词的构成


规则动词的过去分词
work
visit
ask
play
ver _______ to the park? ( be )
B: Yes, I went there last summer.
Key words
Have been
yet
ever
I ______ never ______ of anything like that.
(hear )
Key words
have heard
yet
ever
never
Tom ___________ in the factory since he
left school ten years ago. (work )
Key words
has worked
yet
ever
never
since
A: How long ______ you ________ in this school? (teach )
B: For 6 years.
Key words
have taught
yet
ever
never
since
for
I ______ just ________ the desk, you
can take it to your classroom . (mend )
Key words
have mended
yet
ever
never
since
for
just
_______ you _______ the Forbidden City
(紫禁城) before ? (visit )
Key words
Have visited
yet
ever
never
since
for
just
before
He ____ already ______ a job. (find)
Key words
has found
yet
ever
never
since
for
just
before
already
We _______ only ____________ the first
five questions so far. (discuss )
Key words
have discussed
yet
ever
never
since
for
just
before
already
so far
They ______________over 24,000 fruit
trees up to now . (plant )
Key words
have planted
yet
ever
never
since
for
just
before
already
so far
up to now
Great changes _________________ in
Beijing in the past 10 years. (take place )
Key words
have taken place
yet
ever
never
since
for
just
before
already
so far
up to now
in the past 10 years
He __________ a lot of good things
in his life. (do )
Key words
has done
yet
ever
never
since
for
just
before
already
so far
up to now
in the past 10 years
in his life
I ____________ her lately. ( not see )
Key words
haven’t seen
yet
ever
never
since
for
ju