高一英語：必修一Unit2單元知識點梳理

但它們也有不同之處：

①require和request都可以接賓語+to do sth.結構，而demand沒有此種用法。但可以說demand of sb. to do sth.

②require+動名詞時，主動形式的動名詞具有被動意義，而demand，request無此種用法。

They are demanding higher wages. 他們要求提高工資。

Do you require anything else? 你還要求(需要)別的嗎?

Many people have requested this next song.

許多人要求聽下面這首歌。

They required me to keep silent. 他們要求我保持沉默。

The letter requested us to leave the house within six weeks.

這封信要求我們六周內搬出這所房子。

溫馨提示

以上三個詞的共同點是：從語法上看，request和demand，require都可以接that引導的賓語從句，並且在從句中要使用虛擬語氣。

高手過招

單項填空

①One of the requirements for a fire is that the material to its burning temperature.

A. be heated B. is heated

C. would be heated D. do heat

②—Why were you late for such an important concert?

—The plane arrived at the airport after a of three hours. (2010·陝西商洛一輪檢測)

A. delay B. rest C. tour D. request

①解析：選A。如同require, demand, order, suggest, advise, insist, request等動詞要求其後面的賓語從句使用虛擬語氣一樣，它們所對應的名詞的同位語從句和表語從句也要求使用虛擬語氣，即：should+動詞原形。故選A。

②解析：選A。上句詢問「遲到的原因」，因此下句中的名詞應是與「遲到」意義有關的名詞，所以只能選擇「延誤」。

3. recognize

vt. 辨認出;承認;公認

常用結構：

recognize sb. 認出某人

recognize one』s voice聽出某人的聲音

recognize ... as ... 認定;承認……為……

recognize sb./sth. ... to be ...認為某人/某事物是……

recognize that ...承認……

When he walked out of the station, I recognized him immediately.

當他從車站裡走出來時，我立刻認出了他。

Everyone recognized him to be the lawful heir/as the lawful heir. 大家都承認他為合法繼承人。

高手過招

單項填空

—Oh, it』s you! I you.

—I have just had my hair cut, and I』m wearing new glasses.

A. hadn』t recognized B. haven』t recognized

C. didn』t recognize D. don』t recognize

解析：選C。前句的句意為：哦，是你呀!我剛才沒有認出你來。

所以要用一般過去時。

4. direction

n. [C] 方向;方面;[U]指導;指揮

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