【正文】
)、以“輔音字母 + y ”結(jié)尾的動詞,將 y 變?yōu)?i ,再加“ ed ”?! tudystudiedstudied ,crycriedcried (4)、重讀閉音節(jié)結(jié)尾,末尾只有一個輔音字母,先雙寫該輔音字母,再加“ ed ”。 stopstoppedstopped , dropdroppeddropped2 、不規(guī)則動詞:AAA型 cost cost cost , cut cut cut, read read read 等AAB型 beat beat beaten 等ABA型 e came e run ran run 等ABB型 bring brought brought buy bought bought think thought thought 等 ABC型 do did done go went gone see saw seen 等B)按要求改寫下列各句:4.They have bought a puter.(改成否定句)_________________________________________We have finished our homework .(改成否定句)_________________________________________5.He has lost his book.(先改成一般疑問句,再作肯定與否定回答)— ______________________ ______________________ —______________________ ______________________ They have cleaned the classroom.(先改成一般疑問句,再作肯定與否定回答)— ______________________ ______________________ —______________________ ______________________:(1) “已完成”“過去對現(xiàn)在的影響“ already,表示:已經(jīng)(肯定句中,可放句中或句末), yet,表示:已經(jīng)、還...(否定句和疑問句中,用在句末), just,表示:剛剛 (瞬間動詞)He has already got her help. 他已得到她的幫助。He has just seen the film. 他剛剛看過這場電影。Hehasn’tstarted yet. 他還沒有動身。強調(diào)到現(xiàn)在為止的的生活經(jīng)歷:(延續(xù)性動詞)never,表示從來沒有 ,ever,表示:曾經(jīng)(長用于否定和疑問句),once,一次twice 兩次,three times 三次,so far 到目前為止。She has never been late for school. 他上學(xué)從未遲到過。 Have you ever lived in this hotel? 你曾經(jīng)住過這個酒店嗎?They have been to Beijing twice. 他們?nèi)ミ^兩次北京了。She has passed the exam so far. 到目前為止她已經(jīng)通過了考試。(2) “未完成”“過去到現(xiàn)在可能剛剛結(jié)束,也可能繼續(xù)下去”(延續(xù)性動詞)since + 過去時間點,表示:自從..(1)since+(過去的)月份/年份,(2)since+ 一段時間+ago‘(3)since+ 一般過去時從句for + 時間段:表示:持續(xù)I haven’t seen him for two years. She has taught English for ten years.延續(xù)性動詞和非延續(xù)性動詞的相互轉(zhuǎn)換 初中階段常見的有:buy—have,leave—be away, borrow—keep, join—be a member / die—be dead, bee—be, open (v.)—be open (adj.)