關於英語單詞as的應用知識點

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大學聯考英語詞彙詳解:as的用法

關於英語單詞as的應用知識點

as 用法詳解

1 用作連詞,表示讓步 ,要用於倒裝句,且倒裝後位於句首的名詞通常不用冠詞 。如:

Child as[though]he was, he did quite well. 他雖是個孩子,但已乾得很不錯。

2. 用作關係代詞,主要用法有二。如:

用在such, same, as等之後,引導限制性定語從句。如:

This is thesame watch as I lost. 這塊表跟我丟失的那塊一樣。

Such men as heard of him praised him. 聽説過他的人都讚揚他。

單獨用作關係代詞,引導非限制性定語從句,可放在主句之前 或之後 ,且主從句之間一般要用逗號隔開。如:

He was absent, as is often the case. 他缺席了,這是常有的事。

As was expected, he succeeded at last. 正如我們所料,他終於成功了。

3. 用來表示目的,下面兩種句子結構都可以。如:

仔細寫以便把每句話都寫清楚。

正:Write carefully so as to make every sentence clear.

正:Write so carefully as to make every sentence clear.

4. 在正式文體 中,as後可用倒裝語序表示“…也一樣”這類意思 。如:

He travelled agreat deal, as did most of his friends. 他去過許多地方旅遊,他的多數朋友也是一樣。

He plays the piano, as does his mother. 他會彈鋼琴,他母親也會。

注:用作連詞,表示原因 ,表示時間 。

5. 用於 as if

as though, 意為“彷彿”、“似乎”。兩者一般可通用 。用法上注意幾點:

as if [though] 可引導狀語從句和表語從句,從句謂語根據語義的要求,可用陳述語氣 或虛擬語氣 。如:

It looks as if it is going to rain. 天似乎要下雨了。

It seems as if you’re right. 似乎你是對的`。

He talks asthough he knew everything. 他誇誇其談,好像無所不知。

When apencil is partly in a glass of water, it looks as if it werebroken. 當把一支鉛筆的一部分放在一杯水裏時,它看起來好像折斷了似的。

當主句謂語是過去時態時,從句謂語常可用陳述語氣。如:

He pausedas though he found a difficulty. 他停了下來,似乎遇到了一個難題。

She felt as if she lost something. 他覺得似乎丟了什麼東西。

當從句主語與主句主語一致,且從句謂語中又包括有動詞be時,從句主語及其謂語中的動詞be通常可以省去。如:

From time to time heturned round as though searching for someone. 他不時地四下張望,好像在找人。

He opened his mouth as if to speak. 他張開口,好像要説話似的。

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