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将来完成时 |
将来完成时: 1.构成:shall / will have + 过去分词
2.功能:表示将来某时之前已经完成的动作。
过去将来完成时: 1.构成:would / should have + 过去分词
2.功能:表示从过去某个时间看将来某时之前已经完成的动作。
将来完成进行时: 1.构成:shall / will have been + 现在分词
2.功能:表示某一动作将继续到将来某时,且该动作此时尚未发生。
测试精编(综合训练)
1. Simple photographic lenses can't ________ sharp, undistorted images over a wide field.
2. Of all the factors affecting agricultural yields, weather is the one ________ the most.
3. By tracking the eye of a hurricane, forecasters can determine the speed at which ________.
4. During the flood of 1927, the Red Cross, ________ out of emergency headquarters in Mississippi, set up temporary shelters for the homeless.
5. Of all the economically important plants, palms have been ________.
6. During an eclipse of the sun, ________ in the shadow of the Moon.
7. The photo periodic response of algae actually depends on the duration of darkness, ________.
8. The wallflower ________ because its weak stems often grow on walls and along strong cliffs for support.
9. Because of its importance in modern living, ________ in all parts of the world.
C. and the study of algebra in schools and colleges
10. Sociologists have long recognized that social tension ________.
KEYS
1. D 2. B 3. B 4. D 5. A |
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