現(xiàn)在完成時講解完整PPT學習教案

1、會計學1present(now)futurepast Present Perfect Tense 現(xiàn)在完成時現(xiàn)在完成時第1頁/共17頁主語主語 + have/ has + 過去分詞（過去分詞（pp）助動詞助動詞,無意義無意義 現(xiàn)在完成時的結(jié)構(gòu)現(xiàn)在完成時的結(jié)構(gòu)Winter has already come，will it still be far in spring ?第2頁/共17頁主語主語 + have/ has + 過去分詞（過去分詞（pp）否定形式否定形式 havent ( have not ） +過去分詞過去分詞 hasnt ( has not ) +過去分詞過去分詞疑問句疑問句 把助

2、動詞把助動詞 have / has 放在句首放在句首 現(xiàn)在完成時的結(jié)構(gòu)現(xiàn)在完成時的結(jié)構(gòu)注：主語若是第三人稱單數(shù)助動詞用注：主語若是第三人稱單數(shù)助動詞用 has第3頁/共17頁You have planted all the trees.I have planted all the trees.He/she has planted all the trees.They have planted all the trees. 區(qū)別區(qū)別have 和和 has的用法的用法 主語若是第三人稱單數(shù)助動詞用主語若是第三人稱單數(shù)助動詞用 has第4頁/共17頁1) 表示到現(xiàn)在為止已經(jīng)完成或剛剛完成的動作。表示

3、到現(xiàn)在為止已經(jīng)完成或剛剛完成的動作。Now we have planted all the trees.He has just come back. They have built many buildings in this city. 現(xiàn)在完成時的現(xiàn)在完成時的用法用法第5頁/共17頁2) 表示過去發(fā)生的動作表示過去發(fā)生的動作,強調(diào)結(jié)果或?qū)ΜF(xiàn)在的影響。強調(diào)結(jié)果或?qū)ΜF(xiàn)在的影響。Someone has broken the window. (窗戶現(xiàn)在是壞的窗戶現(xiàn)在是壞的)I have already lost the key. (我現(xiàn)在沒有鑰匙我現(xiàn)在沒有鑰匙)I havent read that

4、 book yet . (不了解書的內(nèi)容不了解書的內(nèi)容)I have just cleaned my hands. (手是干凈的手是干凈的)常與常與already(已經(jīng)已經(jīng)), yet(已經(jīng)已經(jīng)), just(剛剛剛剛),ever(曾曾經(jīng)經(jīng))等詞連用等詞連用. already: 常用于肯定句中常用于肯定句中. yet: 常用于否定句常用于否定句,疑問句尾疑問句尾. 第6頁/共17頁3) 表示從過去開始并持續(xù)到現(xiàn)在的動作或狀態(tài)，常與表示從過去開始并持續(xù)到現(xiàn)在的動作或狀態(tài)，常與包括現(xiàn)在在內(nèi)的一段時間的狀語連用。包括現(xiàn)在在內(nèi)的一段時間的狀語連用。She has learned English for

5、 5 years. He has lived in Beijing since 5 years ago.第7頁/共17頁since: (自自以來以來)1)since+時間點時間點He has stayed here since 5 oclock.2)since+ 時間段時間段+ agoHe has stayed here since 5 hours ago.3)since+ 從句從句She has taught English since he came here. for: (長達）長達）for+ 時間段時間段He has kept the book for 2 weeks.since ,

6、for 的用法的用法: Take notes 第8頁/共17頁用for 或since填空1.Mr. Brown has had his TV _ 15 years. 2.Ive taken driving lessons _last month. 3. My sister has had her cell phone _a month . 4. My friends havent visited me _few days ago. 5. We havent used our car _ a long time . 6. She hasnt had a good cup of coffee _y

7、ears. 7. Tom has worn glasses _he was 7 years old. for since forsinceforforsince第9頁/共17頁注：并非所有注：并非所有for作為時間狀語的句子都用現(xiàn)在完成時作為時間狀語的句子都用現(xiàn)在完成時 搞清一般過去時和現(xiàn)在完成時的區(qū)別搞清一般過去時和現(xiàn)在完成時的區(qū)別I worked here for more than twenty years.(我現(xiàn)在已經(jīng)不在這里工作了我現(xiàn)在已經(jīng)不在這里工作了)I have worked here for more than twenty years.（現(xiàn)在我仍在這里工作）（現(xiàn)在我仍在這里

8、工作）第10頁/共17頁辨析 have been to和 have gone toMy father has gone to Shanghai for a meeting.他（已經(jīng)）去了上海。My father has been to Shanghai for a meeting.他（曾經(jīng)）去了上海。 She has been to China . 她（曾經(jīng)）去過中國。（人已經(jīng)回來了）have been to someplace. 曾經(jīng)去過某地，已經(jīng)回來曾經(jīng)去過某地，已經(jīng)回來has gone to someplace.某人去了某地，還沒有回來某人去了某地，還沒有回來 She has gone

9、to China last week.上周她去了上海 。（人可能回來了也可能沒回來）第11頁/共17頁用用have/has been to, have/has gone to填空填空：1.Where is your brother? He _ the shop. Hell be back soon.2. _ you ever _ to America? Yes, I _ New York twice.3. Here you are at last! Where _ you _? I _ London.4. David _Australia. Im sure hes already arrived.5. Is Benny here? No, he _ the school library. He left five minutes ago.has gone toHave been tohave been tohave beenhave been tohas gone tohas gone to第12頁/共17頁goeshave, foundiswere readingis climbingi