英語四級語法基礎知識大全
很多人在備考四級的時候都忽略了語法的備考，這就導致備考的過程中困難重重，今天我們爲大家整理了英語四級語法基礎知識大全，一起來看一下吧。
大學英語四級必考語法知識點時態
1)現在完成進行時態(have/has been +-ing 分詞構成)∶ 動作或狀態從過去某時開始，繼續到現在，可能繼續下去，也可能剛剛結束.
I' ve been writing letters for an hour.
I' ve been sitting in the garden.
2)過去完成進行時(由had been + ing分詞構成)∶ 過去某個時刻以前一直在進行的動作
I' d been working for some time when he called.
We had been waiting for her for two hours by the time she came.
3)將來完成進行時∶將來某個時刻以前一直在進行的動作.
By next summer, he will have been working here for twenty years.
In another month's time she'll have been studying here for three years.
4)將來完成時(由shall/will have + 過去分詞構成)∶ 將來某時已發生的事，
I shall have finished this one before lunch.
They'll have hit the year's target by the end of October.
語態
可以有兩種被動結構的類型，例如∶
He was said to be jealous of her success.
It was said that he was jealous of her success.
能同時適用於上述兩個句型的主動詞通常都是表示"估計"，"相信"等意義的'動詞，常見的有 assume,believe,expect,fear,feel,know,presume,report,say,suppose,
understand等.
It is supposed that the ship has been sunk.
The ship is supposed to have been sunk.
擔當be supposed to 與不定式的一般形式搭配時往往表示不同的意義.例如∶
Why are you driving so fast in this area? You are supposed to know the speed to know the speed limit.(你應該曉得速度限制)
雙賓語及賓補結構的被動語態
雙賓語結構的被動語態∶ 雙賓語結構變爲被動語態時，可以把主動結構中的—個賓語變爲主語，另一個賓語仍然保留在謂語後面，但多數是把間接賓語變爲主語.
He was asked a number of questions at the press conference.
Two days were allowed them for making the necessary preparations
賓補結構的被動語態∶
She was called Big Sister by everybody.
Then he was made a squad leader.
He was considered quite qualified for the job.
The room was always kept clean and tidy.
短語動詞 Vi+adv
The plane took off two hours late.
Vi+ prep
They looked round the Cathedral.
Vi + prep (有被動語態)
大學英語四級各題型分值
一、英語四級作文
說明∶ 寫作部分佔整套試卷的15% =106.5分
在這部分要達到63.9分爲及格。
時間∶30分鐘
二、英語四級聽力部分=248.5分
聽力部分佔整套試題的35%，除聽力篇章外每個題都是7.1分。
1、短篇新聞 7% 共7小題，每小題7.1分。
2、長對話 8% 8個題目 每小題7.1分。
3、聽力篇章 20% 共10個小題，每小題14.2分。
時間∶25分鐘。在這部分你要達到149分爲及格，做對14個左右即可。
三、英語四級閱讀理解 35% =248.5分
閱讀部分佔整套試題的35%，選詞填空每題3.55分，其餘每題都是7.1分。
1、選詞填空 5% 10個題，每小題3.55分
2、長篇閱讀 10% 10個題，每小題7.1分。
3、仔細閱讀 20% 10個題共2篇，一篇5個題，每小題14.2分。
時間∶40分鐘 在這部分你要達到149分爲及格，做對18個左右即可。
