TAILIEUCHUNG - Grammar workbook 8

Tham khảo tài liệu 'grammar workbook 8', ngoại ngữ, anh ngữ phổ thông phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 18 Part I Laying Out the Concrete Slab Grammar Basics r had waited or had been waiting. The waiting preceded the doctor s announcement so you should use past perfect. Progressive adds a you are there feel good if you re a fan of hospital waiting rooms but isn t necessary. s will have waited will have read. The deadline in the sentence the end of today s trip is your clue for future perfect tense. t has refused. Notice the present-past link Mike declared and Grace is acting now. Hence you need present perfect tense. u had sent. The pointing and the hospital-sending are at two different times in the past with the hospital occurring first. Go for past perfect for the earlier action. v will have spoken. The future perfect needs an end point in this sentence the end of the yelling before which the action occurs. w has achieved. If he keeps trying you have a present-tense idea that s connected to the past despite years of practice and on rare occasions . Present perfect connects the present and past. x has consisted. This sentence has a present-tense clue at times . The sentence tells you about the past at times and the present is trying so present perfect is the one you want. y had declared. The after at the beginning of the sentence is your clue that one action occurs before another. Because both are in the past you need past perfect tense for the earlier action. A will have given. A deadline at some point in the future calls for future perfect tense. B has expressed. The sentence ties the present to the past as you see in the time clues failing which implies present and over the last few weeks which implies past . The present perfect tense is perfect for present-past links. Sorry for the pun. C had approached. The sentence discusses two actions in the past. Mike s action an approach to ambassadors took place before Tim s action begging for a few minutes of your time. You express the earlier of two past actions with the past perfect tense. D will have declared. A .

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