He was often seen _________ with charity work last year.A．to helpB．helpedC．helpi
题型：不详难度：来源：
He was often seen _________ with charity work last year.| A．to help | B．helped | C．helping | D．help |
|
答案
| A |
解析
试题分析：see后面宾语可以接现在分词,不带to的不定式和过去分词作宾语补足语,不过含义不同. see sb. doing 表示看见某人正在做某事;see sb. do 表示看见某人做过某事;see sb. done 表示看见某人被…句意:去年(有人)经常看见他帮助慈善团体工作.结合语境可知本句指的是看见他做过某事.在被动语态中,省略的不定式符号要加上,故选A.
点评：此类题型主要是确定句子主语与谓语动词的关系。如果是主动关系则用主动语态，反之如果是动宾关系，则用被动语态。注意一些接不带to的不定式做宾语补足语的动词用作被动语态时，不定式符号to要加上。 |
举一反三
---Excuse me. I’m looking for Be the Best of Yourself.
---Sorry. The book you ask for ______ out.| A．is selling | B．is sold | C．was selling | D．will be sold |
|
Each year quite a lot of food ______ around the world. It’s really time for us to do something.
A. was wasted B. is wasted C. wasted C. will be wasted |
Have you heard about that car accident near the school?
Yes，luckily no one________．| A．hurt | B．was hurt | C．has hurt | D．were hurt |
|
—It’s difficult to get to the other side of the river.
—I think a bridge over the river.| A．should be built | B．should build | C．will build | D．has built |
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-- Excuse me, sir, smoking in the gas station.
-- Oh, I"m really sorry.
A. doesn"t allow B. isn"t allowed C. aren"t allowed |
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