牛津8B英文Unit 1 Past and present教案
ikuko has just arrived in victoria.
the present perfect is often used with for and since.
greg has lived here for 20 years.
greg has lived here since 1978.
the present perfect is formed like this: have plus past participle
step 2 having a revision
what did you do last night?
what did your mother do two weeks ago?
what did you father do last year?
work in pairs to talk about the thing they did in the past.
step 3 doing practice
eddie was born four years ago
past present
we use the simple past tense to talk about what happened at a definite time in the past.
eddie has lived with millie since he was born.
eddie has lives with millie for four years.
past present
we use the present perfect tense to talk about things that started in the past and are continued to the present.
we have known that hobo was very angry, because eddie has eaten his food. (eddie ate the food in the past and now hobo does not have anything to eat. )
we also use the present perfect tense to talk about things that happened in the past and have connection with the present.
step 4 drawing a conclusion
we make positive statements and negative statements using the present perfect tense like this:
have /has (+not) + past participle
we usually use these forms when we speak: hasn’t = has not, haven’t = have not
look up the past participles in the dictionary if necessary. there is also a table of irregular verbs on page 112.
we ask and answer questions using the present perfect tense like this.
have i /you/we/they arrived? yes, i/you/we/they have. no, i/you/we/they haven’t/have not.
has he/she/it arrived? yes, he/she/it has. no, he/she/it hasn’t/has not.
step 5 doing practice
mr wu asks the students to complete the sentences using the present perfect tense. completer the sentences in part a1 on page 14.