【正文】
to 的不定式,變?yōu)楸粍?dòng)語(yǔ)態(tài)時(shí),該不定式前要加 to。 I worked here for more than twenty years. (我現(xiàn)在已不在這里工作。 注意:非延續(xù)性動(dòng)詞的否定形式可以與表示延續(xù)時(shí)間的狀語(yǔ)連用。 This is the first time (that) I’ve heard him sing. 這是我第一次聽(tīng)他唱歌。 The train leaves at six tomorrow morning. When does the bus star? It stars in ten minutes. 2)倒裝句,表示動(dòng)作正在進(jìn)行,如: Here es the bus. = The bus is ing. There goes the bell. = The bell is ringing. 3)在時(shí)間或條件句中。 5. be going to / will 用于條件句時(shí), be going to 表將來(lái) will 表意愿 If you are going to make a journey, you’d better get ready for it a s soon as possible. Now if you will take off your clothes, we will fit the new clothes on you in front of the mirror. 6. be to和 be going to be to 表示客觀安排或受人指示而做某事。 The play is going to be produced next month。 will 在陳述句中用于各人稱,在爭(zhēng)求意見(jiàn)時(shí)常用于第二人稱。 Did you want anything else? I wondered if you could help me. 2)情態(tài)動(dòng)詞 could, would. Could you lend me your bike? 3. used to / be used to used to + do: 過(guò)去常常 表示過(guò)去習(xí)慣性的動(dòng)作或狀態(tài),但如今已不存在。 Christine was an invalid all her life. (含義:她已不在人間。 It is time you went to bed. 你早該睡覺(jué)了。 2. 一般過(guò)去時(shí)的用法 1)在確定的過(guò)去時(shí)間里所發(fā)生的動(dòng)作或存在的狀態(tài)。 注意:此用法如果出現(xiàn)在賓語(yǔ)從句中,即使主句是過(guò)去時(shí),從句謂語(yǔ)也要用一般現(xiàn)在時(shí)。1) 經(jīng)常性或習(xí)慣性的動(dòng)作,常與表示頻腮度的時(shí)間狀語(yǔ)連用。 Pride goes before a fall. 驕者必?cái)?。再如?Now watch me, I switch on the current and stand back. 第二句中的 now是進(jìn)行時(shí)的標(biāo)志,表示正在進(jìn)行的動(dòng)作的客觀狀況,所以后句用一般現(xiàn)在時(shí)。 When I was a child, I often played football in the street. Whenever the Browns went during their visit, they were given a warm wele. 3)句型: It is time for sb. to do sth 到 …… 時(shí)間了 該 …… 了 It is time sb. did sth. 時(shí)間已遲了 早該 …… 了 It is time for you to go to bed. 你該睡覺(jué)了。 比較: 一般過(guò)去時(shí)表示的動(dòng)作或狀態(tài)都已成為過(guò)去,現(xiàn)已不復(fù)存在。 1)動(dòng)詞 want, hope, wonder, think, intend 等。 4. 一般將來(lái)時(shí) 1) shall用于第一人稱,常被 will 所代替。 What are you going to do tomorrow? b. 計(jì)劃,安排要發(fā)生的事。 He is about to leave for Beijing. 注意: be about to 不能與 tomorrow, next week 等表示明確將來(lái)時(shí)的時(shí)間狀語(yǔ)連用。這主要用來(lái)表示在時(shí)間上已確定或安排好的事情。 It is the first time that I have visited the city. It was the third time that the boy had been late. 2) This is the… that… 結(jié)構(gòu), that 從句要用現(xiàn)在完成時(shí) . This is the best film that I’ve (ever) seen. 這是我看過(guò)的最好的電影。 This is the largest fish I have ever seen. It is / was the first time +thatclause 的句型中,從句要用完成時(shí)。 I have lived here for more than twenty years. I have lived here since I was born.. My aunt has worked in a clinic since 1949. Some new oilfields have been opened up since 1976. I have known Xiao Li since she was a little girl. My brother has been in the Youth League for two years. I have not heard from my uncle for a long time. 注意:并非有 for 作為時(shí)間狀語(yǔ)的句子都用現(xiàn)在完成時(shí)。 1) (對(duì) ) Tom has studied Russian for three years. = Tom