6. 關于 as…as, 用法注意(from www.hz123456.com)：

(1) 中間只能用形容詞或副詞的原級，不能用比較級或最高級。如果在第二個as之后使用獨立的人稱代詞，一般說來用主格 (較正式)或賓格 (非正式)均可：

He’s as old as she her. 他年紀跟她一樣大。

注意：要是第二個as之后的人稱代詞跟有謂語動詞，則該人稱代詞只能用主格：

He is as old as she is.

但是有時用主格或賓格含義差別很大：

You love him as much as I (=as I love him). 你愛他像我愛他一樣。

You love him as much as me (=as you love me). 你愛他像愛我一樣。

(2) 在肯定句中用as…as, 在否定句中用not as…as或not so…as 均可：

He doesn’t study as [so] hard as his brother. 他學習不如他弟弟努力。

(3) 要注意比較對象的一致性，即比較的雙方必須是可以比較的同類人或物，否則會出錯：

正：The population of China is much larger than that of Japan. 中國人口比日本人口多得多。

誤：The population of China is much larger than Japan.

(此句錯在將 the population of China 與 Japan 來比較，比較對象不一致)

(4) 如果涉及數量或程度，可用以下兩個結構：

①as much＋ (不可數名詞＋) as

②as many＋ (可數名詞復數＋) as

You must speak English as much as possible. 你必須盡可能地多說英語。

You’ve made as many mistakes as I have. 你犯的錯誤和我犯的一樣多。

(5) 請注意下列結構的詞序：

她和她媽媽一樣是位好廚師。

正：She is a cook as good as her mother.

正：She is as good a cook as her mother.

誤：She is as a good cook as her mother. (from www.hz123456.com)

(6) 修飾as…as結構的常見詞語有nearly, almost, just, exactly, half, quite, twice, three times等，請注意這些修飾語都只能放在as…as 結構之前 (而不能置于其中或其后：

This rope is twice as long as that one. 這根繩子比那根長一倍。

(7) as…as結構的下列用法，屬于“異質比較” (注：

主、從句的主語和謂語一致時，從句的主語和謂語有時可以省略)：

The room is as long as (it is) wide. 這房間的長寬尺寸一樣。

The news was as unexpected as (it was) welcome. 這消息來得突然，但受人歡迎。

She is as clever as (she is) beautiful. 她既聰明又漂亮。

One is as light as the other is heavy. 一個輕，另一個重。

(8) as…as結構在一定的上下文中可以用其省略結構 (即省去其中的一個 as)：

She’s clever, but her brother is just as clever. 她很聰明，但她兄弟也一樣聰明。

The woman married a man poor as herself. 這個女人嫁給了一個與她一樣窮的男人。

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