2015牛津译林版英语八下《Unit 1 Past and Present(Grammar).ppt

Unit 1
Past and present
Grammar
牛津版初中英语八年级下
The Present Perfect Tense
We use the simple past tense to talk about what happened at a definite time in the past.
Past present
Eddie was born four years ago.
We use the present perfect tense to talk about things that started in the past and still have some connection with the present.
Eddie has lived with Millie since he was born.
Eddie has lived with Millie for four years.
present
Past
Past
present
4 years
一、现在完成时的构成1. 现在完成时的肯定句句型: 主语+ have /has +过去分词。 We have lived in Beijing. He has lived in Beijing. I have finished my homework.
2. 现在完成时的否定句
句型:主语+ have/has+ not+过去分词
I have not seen the movie yet.
He hasn’t been to Beijing since then
I / They/ We / You
have
arrived.
He / She / It
has
Have you….? Has he….?
Yes, I have Yes, he has.
No, I haven’t. No, he hasn’t .
has not = hasn’t have not= haven’t
the past particles of some verbs
most verbs
Irregular verbs
Infinitive
Past particle
Infinitive
Past particle
travel
travelled
come
come
visit
visited
see
seen
live
lived
be
been
miss
missed
give
given
land
landed
write
written
move
moved
make
made
learn
learned
put
put
Making sentences
asks the students plete the sentences below using the present perfect plete the sentences.
They___________(go) to the cinema already.
Mr And _________________(e) back yet.
John___________ (be) to the USA a few times.
We _______________ (not see)that film yet
I _______________ (not talk)to my cousin since last Friday.
You _________________ (not visit) me for a long time.
have gone
have e
has been
have not seen
have not talked
have not visited

句型 Have/Has+主语+过去分词+….
Have you finished the work?
Has she arrived here?

句型特殊疑问词+have/has+主语+过去分词+…….
How many times have you been to the Great Wall?
Chat time
Millie and Sandy are talking about a film about Hong plete their the correct forms of the verbs in the b