高一英語學習：三四單元重難點句型歸納一

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高一英語學習：三四單元重難點句型歸納一

☆句型歸納☆

1. You shouldn't go rafting unless you know how to swim, and you should always wear a life jacket. 除非你會游泳，而且要一直穿著救生衣，否則就不應該去做漂流運動。

該句中的unless引導狀語從句。例如：One can't learn a foreign language well unless he studies hard.

unless引導的條件狀語從句，一般可以與if...not...互換。還要注意unless引導的從句經�？梢允÷浴�

【考例】(200l北京春招)The men will have to wait all day ____ the doctor works faster.

A. if B. unless C. whether D. that

[考查目標]狀語從句。

[答案與解析]B 句子意思是“如果醫生不快點工作，

這些人將不得不等一整天。”應該選unless。

2. Eco-travel is a way to find out what can be done to help animals and plants as well as people. 生態游可以找到既幫助別人.又幫助動植物的途徑。

該句中的as well as是連詞，連接兩個并列成分。例如: He can speak German as well as French.

常見的用法:

1. well是副詞，意思是“好，優秀”，as well as是形容詞同級比較結構。

2. as well as是固定短語，意思是“和”，相當于"not only … but also..."。

3. as well as連接兩個并列成分作主語時，句子的謂語動詞應該與前面那個名詞或代詞的人稱或數保持一致。

4. as well as還可當作復雜介詞用，意思是“除了……之外，還有”;相當于"besides，apart from"。

5. as well，是副詞短語，意思是“也”，相當于“too / also”常位于句尾，與too位置相當。

6. may / might as well do sth 表示“還是……的好”。

【考例】(NMET 1994) John plays football ____, if not better than David.

A. as well B. as well as C. so well D. so well as

[考查目標] as well as連接比較狀語從句。

[答案與解析]B 該句中 if not better than相當于插入語，起干擾作用，如果不予考慮，原句就變成了同級比較結構 "John plays football as well as David"。

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