【文章內(nèi)容簡介】
。例:2005年6月大學(xué)四級第65題 I was _______ the point of telephoning him when his letter arrived. A) in B) to C) at D) on 答案是D)。on the point of doing是固定詞組,意思是“正要、打算”。全句的意思是:“當他的信到的時候我正要打電話給他?!弊⒁馐马棧骸 ≡谝詉f, when, as long as, as soon as, after, before, in case, until, unless等連詞以及具有連詞作用的副詞(immediately, the moment, directly)等引導(dǎo)的狀語從句,一般用現(xiàn)在時代替將來時。強調(diào)延續(xù)性或動態(tài)時,可用完成時?! ±篒 hope his health will have improved by the time you e back next year.(我希望到明年你回來的時候,他的身體已經(jīng)好多了。)四、現(xiàn)在進行時(be doing) 概念:表示現(xiàn)階段或說話時正在進行的動作及行為。 時間狀語:now, at this time, these days, etc. 基本結(jié)構(gòu):am/is/are+doing 否定形式:am/is/are+not+doing. 一般疑問句:把be動詞放于句首。五、過去進行時:用法:A)表示在過去一個比較具體的時間正在發(fā)生的動作?! ±篗ary was listening to light music 10 minutes ago.(10分鐘前,瑪麗正在聽輕音樂。)B)如果when, while這樣的時間狀語引導(dǎo)詞所引導(dǎo)的主從句之一是一般過去時,則另一個句子常用過去進行時?! ±篒 was washing my hair when you knocked at the front door.(你敲前門時我正在洗頭發(fā)。) 時間狀語:at this time yesterday, at that time或以when引導(dǎo)的謂語動詞是一般過去時的時間狀語等?! 』窘Y(jié)構(gòu):was/were+doing 否定形式:was/were + not + doing. 一般疑問句:把was或were放于句首。六、將來進行時(will be doing)用法:強調(diào)在將來的某個具體時間正在發(fā)生的動作或事情。例:Don39。t worry, you won39。t miss her. She will be wearing a red Tshirt and a white skirt at that time.(別擔心,你不會認不出她的。她到時會穿一件紅色的T恤衫和一條白色的短裙。)句子結(jié)構(gòu):主語+will be+doing/主語+be going to+be+doing時間狀語:soon, tomorrow, this evening, on Sunday, by this time, tomorrow, in two days, tomorrow evening.Iwill be studyingEnglish when you arrive tonight.明晚你來的時候,我會正在學(xué)習英語.I’m going to be studyingEn