不定式
1. Helen had to shout _____ above the sound of the music. (全国卷IV2004)
A. making herself hear B. to make herself hear C. making herself heard D. to make herself heard
[解析] 答案是D。不定式作目的状语，make＋宾语＋过去分词作宾语补足语，表被动。
2. My advisor encouraged _____ a summer course to improve my writing skills. (北京2004)
A. for me taking B. me taking C. for me to take D. me to take
[解析] 答案是D。encourage sb. to do sth.鼓励某人做某事。
3. The flu is believed _____ by viruses that like to reproduce in the cells inside the human nose and throat. (上海2004)
A. causing B. being caused C. to be caused D. to have caused
[解析] 答案是C。believe可以接不定式作宾语补足语；这里不定式又表示被动关系。
4. I don’t know whether you happen _____ , but I’m going to study in the U.S.A. this September. (辽宁2004)
A. to be heard B. to be hearing C. to hear D. to have heard
[解析] 答案是D。不定式的完成式，表示动作在谓语动作之前已经完成。
5. The news reporters hurried to the airport, only _____ the film stars had left. (福建2004)
A. to tell B. to be told C. telling D. told
[解析] 答案是B。only与不定式连用作结果状语，多表示出乎意料的结果，译作“结果却”。
6. I’m going to the supermarket this afternoon. Do you have anything _____ ? (上海2004春)
A. to be buying B. to buy C. for buying D. bought
[解析] 答案是B。动词不定式做定语，have用作实义动词，表示“你有什么要买的东西吗？”
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