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《Learning about Language》公开课PPT课件优质课下载
现在完成进行时
Teaching Objective
what is present perfect continuous tense(现在完成进行时)?
how to use present perfect continuous tense(现在完成进行时)?
the difference between present perfect continuous tense (现在完成进行时) and present perfect tense(现在完成时).
talk about your hobbies in English.
cooperate with others actively.
I am doing my homework
I have done my homework
I have been doing my homework for two hours
Match
A
B
C
B
C
A
定义：从过去开始，一直延续到现在的动作，且动作正在进行，有可能延续下去
Past
Present
Future
doing
have done
have been doing
I am doing my homework