將來完成時：

    1.構(gòu)成：shall / will have + 過去分詞

    2.功能：表示將來某時之前已經(jīng)完成的動作。？。 They will have been here
for 5 years next Friday.？。 By the end of next term， the students will
have finished the book.

    過去將來完成時：

    1.構(gòu)成：would / should have + 過去分詞

    2.功能：表示從過去某個時間看將來某時之前已經(jīng)完成的動作。？。 He said
that they would have arrived by seven o'clock.

    將來完成進(jìn)行時：

    1.構(gòu)成：shall / will have been +現(xiàn)在分詞

    2.功能：表示某一動作將繼續(xù)到將來某時，且該動作此時尚未發(fā)生。？。 We
shall have been staying here for four weeks when Tom arrives. ？。 It
will have been raining for a week if it does not stop tomorrow. ［注：
此句型過于復(fù)雜，人們很少運用，了解而已。］

    測試精編（綜合訓(xùn)練）

    1. Simple photographic lenses can't ________ sharp， undistorted images
over a wide field. A. to form B. are formed C. forming D. form

    2. Of all the factors affecting agricultural yields ， weather is
the one ________ the most. A. it influences farmers B. that influences
farmers C. farmers that it influences D. why farmers influence it

    3. By tracking the eye of a hurricane ， forecasters can determine
the speed at which ________. A. is a storm moving B. a storm is moving
C. is moving a storm D. a moving storm

    4. During the flood of 1927 ， the Red Cross， ________ out of emergency
headquarters in Mississippi ， set up temporary shelters for the homeless.
A. operates B. is operating C. has operated D. operating

    5. Of all the economically important plants ， palms have been ________.
A. the least studied B. study the least C. study less and less D. to study
the less

    6. During an eclipse of the sun ， ________ in the shadow of the Moon.
A. the Earth lies B. the Earth when lying C. that the Earth lies D. the
lying Earth

    7. The photo periodic response of algae actually depends on the duration
of darkness ， ________. A. the light is not on B. and not on light C.
but is not on the light D. is not on light

    8. The wallflower ________ because its weak stems often grow on walls
and along strong cliffs for support. A. so called is B. so is called C.
is so called D. called is so

    9. Because of its importance in modern living ， ________ in all parts
of the world. A. algebra is studied in schools and colleges B. studying
algebra in schools and colleges C. and the study of algebra in schools
and colleges D. in schools and colleges are algebra studies

    10. Sociologists have long recognized that social tension ________.
A. elements from group living B. elements of a normal group life C. living
are a group of elements D. are normal elements of group life

    （后設(shè)答案，大家不要偷看哦~ （*^__^*）嘻嘻……）

    KEYS

    1. D 2. B 3. B 4. D 5. A 6. A 7. B 8. C 9. A 10. D