人教版八年級英語下冊《Have you read Treasure Island yet?》SectionA PPT課件下載(第2課時)，共25頁。
While-reading
1. What does Robinson Crusoe wait for?
Another ship.
2.Why does Robinson Crusoe call the man Friday?
Because that was the day Robinson Crusoe met him.
Grammar focus
Have you read Little Women yet?
Yes, I have./ No, I haven’t.
Has Tina read Treasure Island yet?
Yes, she has. She thinks it’s fantastic.
Have you decided which book to write about yet?
Yes, I have. I’ve already finished reading it. It was really good.
現(xiàn)在完成時：
表示過去發(fā)生或已經(jīng)完成的動作對現(xiàn)在造成的影響或結(jié)果，或從過去某一時間開始并一直持續(xù)到現(xiàn)在的動作或保存的狀態(tài)。
結(jié)構(gòu)： 主語+ have / has + 動詞的過去分詞
否定疑問句：主語+ haven’t / hasn’t + 動詞的過去分詞
一般疑問句：Have / Has … ?
Yes, I have. No, I haven’t.
Yes, she has. No, she hasn’t.
1. 過去發(fā)生的動作對現(xiàn)在造成的影響或結(jié)果。和already, never, ever, just, before, yet 等狀語連用。
I have just had my breakfast.
2. 過去已經(jīng)開始，持續(xù)到現(xiàn)在的動作或狀態(tài)，常與for或since引起的一段時間狀語連用。
I have lived here for three years.
I have lived here since 2004.
already和yet都可以作為現(xiàn)在完成時的標(biāo)志詞，但它們的用法不同。
already一般用于肯定句中。如：
We have already cleaned up our classroom.
注意：already用于疑問句中時通常表示驚奇。如：
Have you finished your homework already? I can’t believe it.
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關(guān)鍵詞：Have you read Treasure Island yet? PPT課件免費下載，.PPT格式；
