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初中英語知識點大全,

  • 初中
  • 2025-03-01

初中英語知識點大全?那么,初中英語知識點大全?一起來了解一下吧。

語法

被動語態(tài)

構成形式

基本時態(tài)變化:被動語態(tài)由be + 過去分詞構成,be 隨時態(tài)變化而變化,通常有十種時態(tài)的被動形式。例如:| 時態(tài) | 結構 | 例句 || --- | --- | --- || 一般現(xiàn)在時 | am/is/are + done(過去分詞) | Visitors are requested not to touch the exhibits. || 現(xiàn)在完成時 | has/have been done | All the preparations for the task have been completed, and we're ready to start. || 現(xiàn)在進行時 | am/is/are being done | A new cinema is being built here. || 一般過去時 | was/were done | - || 過去完成時 | had been done | By the end of last year, another new gymnasium had been completed in Beijing. || 過去進行時 | was/were being done | A meeting was being held when I was there. || 一般將來時 | shall/will be done | Hundreds of jobs will be lost if the factory closes. || 過去將來時 | should/would be done | The news would be sent to the soldier's mother as soon as it arrived. || 將來完成時(少用) | shall/will have been done | The project will have been completed before July. |

特殊結構形式

帶情態(tài)動詞的被動結構:情態(tài)動詞 + be + 過去分詞。例:The baby should be taken good care of by the baby - sitter.

雙賓語變被動:有些動詞有兩個賓語,變被動時可把主動結構中的一個賓語變?yōu)橹髡Z,另一賓語保留在謂語后,通常變?yōu)橹髡Z的是間接賓語。例:His mother gave him a present for his birthday. 可改為 He was given a present by his mother for his birthday.

賓語補足語結構變被動:當動詞 + 賓語 + 賓語補足語結構變?yōu)楸粍诱Z態(tài)時,將賓語變?yōu)楸粍咏Y構中的主語,其余不動。例:Someone caught the boy smoking a cigarette. 可改為 The boy was caught smoking a cigarette.

使役和感官動詞后不定式變化:在使役動詞 have,make,get 以及感官動詞 see,watch,notice,hear,feel,observe 等后面不定式作賓語補語時,主動結構中不定式 to 要省略,但變?yōu)楸粍咏Y構時,要加 to。例:Someone saw a stranger walk into the building. 可改為 A stranger was seen to walk into the building.

動詞詞組的被動:有些相當于及物動詞的動詞詞組,如動詞 + 介詞,動詞 + 副詞等,也可用于被動結構,但要把它們看作一個整體,其中的介詞或副詞不能省略。例:The meeting is to be put off till Friday.

非謂語動詞的被動語態(tài):v + ing 形式及不定式 to do 也有被動語態(tài)(一般時態(tài)和完成時態(tài))。

使用情況

講話者不知道動作的執(zhí)行者或不必說出動作的執(zhí)行者(這時可省 by 短語)。

借助被動的動作突出動作的執(zhí)行者。

為了更好地安排句子。例:The well - known person got on the bus and was immediately recognized by people.(一個主語就夠了)

相關句型:一些表示據(jù)說或相信的動詞如 believe,consider,expect,report,say,suppose,think 等可以

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