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8b unit1-3 grammar(共29张PPT).ppt
page1
Grammar
六合区实验初中
龙
Unit1---Unit3
page2
Grammar 1
The Present Perfect Tense
We use the simple past tense to talk about what happened at a definite time in the past(在一个确切的过去时间).
Past present
Eddie was born four years ago.
page3
We use the present perfect tense to talk about things that started in the past and still have some connection with the present与现在有一些联系.
Eddie has lived with Millie since he was born.
Eddie has lived with Millie for four years.
He has cleaned our classroom.(It’s clean now.)
present
Past
Past
present
4 years
page4
一、现在完成时的构成1现在完成时的肯定句句型 主语(第一、二人称单、复数)+have 主语(第三人称复数) +have +过去分词 主语(第三人称单数) +has
We have lived in Beijing.
He has lived in Beijing.
I have finished my homewo
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