EXERCISE 12. Passive forms. (Chart 10-5)
Directions: Complete the sentences with the correct passive forms of the present and past
progressive.- Mr. Rice is teaching our class today.
-r Our class IS be~w tahsht by Mr. Rice today. - Someone is building a new house on Elm Street.
+ Anew house on Elm Street.
- The Smith Construction Company is building that house.
-t That house by the Smith Construction Company.
- We couldn't use our classroom yesterday because someone was painting it.
-t We couldn't use our classroom yesterday because it
- Someone is organizing a student trip to the art museum.
-t A student trip to the art museum
- Dogs usually wag their tails while people are petting them.
-r Dogs usually wag their tails while they - Many of the older people in the neighborhood were growing vegetables to help with
3 n the war effort.
If: -_ -r Vegetables by many of the older people in the
neighborhood to help with the war effort. - According to one scientific estimate, we are losing 20,000 species of plants and
animals each year due to the destruction of rainforests.
-* According to one scientific estimate, 20,000 species of plants and animals
each year due to the destruction of rainforests.
I 10-6 PASSIVE MODAL AUXILIARIES
LCTrYE MUUAL
LUXlLURlES
Bob uriU mail it.
Bob can mail it.
Bob should mail it.
Bob ought w mail it.
Bob must mail it.
Bob has w mail it.
Bob may mail it.
Bob might mad it.
Bob could mail it.PASSIVE MUUAL AUXLUAIUW
(MODAL + B6 + PAST PARTICIPLE)
It will be mailed by Bob.
It can be mailed by Bob.
It should be masled by Bob.
It ought to be mailed by Bob.
It muat be mailed by Bob.
It has to be mailed by Bob.
It may be mailed by Bob.
It might be mailed by Bob.
It could be mailed by Bob.FORM: modal + be + pastpa&pIe
(See Chapter 7 for information about
the meanings and uses of modal
auxiliaries.)288 CHAPTER 10