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關(guān)閉窗口 5. 這個to是介詞還是不定式符號
We are looking forward to ____ from Mary.
A. hear B. hearing C. heard D. have heard
此題應(yīng)選B。容易誤選A，認為其前的to是不定式符號。
to有時是不定式符號, 有時是介詞。用作介詞時, 注意以下常見搭配：
look forward to 盼望
devote……to 致力于, 獻身于
pay attention to 注意
stick to 堅持
be used to 習慣于(但used to表示過去經(jīng)常, to為不定式符號；be used to 表示“被用來……”時, to 也是不定式符號)
on the way to 即將成為(但表示“在做某事的路上”時to是不定式符號)
1. He was devoted to _____ the poor.
A. help B. helping C. helped D. being helped
2. The weather was cold, but soon he got used to_____ there.
A. live B. living C. lived D. having lived
3. You should pay more attention to ______ with those who differ with you.
A. unite and work B. uniting and working
C. unite and working D. uniting and work
4. She was on her way to ______ her daughter.
A. see B. seeing C. saw D. have seen
5. He was on the way to ______ an engineer.
A. become B. becoming C. became D. be
答案：1. B 2. B 3. B 4. A 5. B
6. except后能接哪些詞
A：Does he often come to see you?
B：No, the never comes ____ he is in trouble.
A. except B. except that C. except when D. except for
此題很容易誤選B, 因為后面是一個從句, 所以很容易聯(lián)想到except that, 其實此題應(yīng)選C。B, C 兩者之后均接從句, 其區(qū)別主要從句意上看：except when中的when有“當……時”之意, 而except that則無此義。比較：
I know nothing about him except that he lives inParis. 我除知道他住在巴黎外, 其它情況一無所知。
I like her except when she's angry. 除了她發(fā)怒的時候, 我還是挺喜歡她的。
except作為介詞, 后接名詞或代詞(這是基本用法), 除了以上提到的后接that從句和when從句外, 以下用法也需注意：
(1) 副詞：She has never come late except recently. 除了最近一段時間, 她從未遲到。
(2) 介詞短語：The window is never opened except insummer. 除了在夏天外, 這扇窗戶從不打開。
(3) 不定式(注意是否帶 to)：It had no effect exceptto make him angry. 除了惹他生氣外, 沒產(chǎn)生任何效果。 /
There was little we could do except wait. 除了等待我們沒有什么辦法。
(4) what從句：I know nothing about it except whathe told me. 除他告訴我的情況外, 我對此事一無所知。
(5) where從句：My papers seem to be everywhereexcept where they ought to be. 我的文件似乎完全不在它們應(yīng)該放置的地方。
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