Tham khảo tài liệu 'fundamentals_english_grammar_3rd_split_31', ngoại ngữ, ngữ pháp tiếng anh phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | EXERCISE12. Passive forms Chart. 10-5 past progressive. 1. Mr. Rice is teaching our class today. Our class s being h tugkvb by Mr. Rice today. 2. Someone is building a new house on Elm Street. - A new house on Elm Street. 3. The Smith Construction Company is building that house. - That house by the Smith Construction Company. 4. We couldn t use our classroom yesterday because someone was painting it. - We couldn t use our classroom yesterday because it . 5. Someone is organizing a student trip to the art museum. - A student trip to the art museum . 6. Dogs usually wag their tails while people are petting them. Dogs usually wag their tails while they. 7. Many of the older people in the neighborhood were growing vegetables to help with the war effort. - Vegetables by many of the older people in the neighborhood to help with the war effort. 8. 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. 10-6 PASSIVE MODAL AUXILIARIES ACTIVE MODAL AUXILIARIES PASSIVE MODAL AUXILIARIES MODAL. BE PAST participle Modal auxiliaries are often used in the passive. Bob will mail it. It will be mailed by Bob. FORM modal be past participle Bob can mail it. It can be mailed by Bob. See Chapter 7 for information about Bob should mail it. It should be mailed by Bob. the meanings and uses of modal Bob ought to mail it. It ought to be mailed by Bob. auxiliaries. Bob must mail it. It must be mailed by Bob. Bob has to mail it. It has to be mailed by Bob. Bob may mail it. It may be mailed by Bob. Bob might mail it. It might be mailed by Bob. Bob could mail it. It could be mailed by Bob. 288 CHAPTER 10 EXERCISE 13. Passive modals. Chart 10-6 Simpo Meéýíỉiẵ tiWW wwdSiwqpi fflodais. 1. Someone must send this letter immediately. This letter wuasP Ve sent- immediately. 2. People should .
