Tham khảo tài liệu 'english grammar drills part 35', ngoại ngữ, ngữ pháp tiếng anh phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 230 Sentences 2. We should ask whom. 3. They are staying where. 4. The matter with him is what. 5. We can see her how soon. 6. They are staying how long. 7. They had planned to leave when. 8. The meetings are how long usually. 9. I should pay how much for it. 10. They would meet with us how often. Questions and Negatives 231 11. He had given what to them for Christmas that year. 12. We should care why what he thinks about it. 13. They would park the car where if the lot is closed. 14. Robert is doing what on earth in Cleveland. 15. We should call him what. To this point we have only worked with information questions that have been formed with verbs that can be inverted modal auxiliary verbs helping verbs and be as a main verb. Now we will look at information questions that require do. There is nothing actually different about these questions except that having to insert do adds one more step to the process. Let us start again with the two movement rules 1. Move the interrogative pronoun to the first position in the sentence. 2. Invert the verb and subject. Between these two rules we need to apply the do insertion rule. That is we insert do before the first verb and transfer the tense of that first verb to do. We then apply Rule 2 in the normal way. Here is an example Statement They left when. Rule 1 When they left. Do insertion When they did leave. Rule 2 When did they leave 232 Sentences Note that did has picked up the past tense from left causing left to revert back to its base form leave. Here are several more examples using the do insertion rule Statement You want to go where. Rule 1 Where you want to go. Do insertion Where you do want to go. Note that do is in the present tense Rule 2 Where do you want to go Statement They turned the offer down why. Rule 1 Why they turned the offer down. Do insertion Why they did turn the offer down. Rule 2 Why did they turn the offer down Statement You called them how often about the meeting. Rule 1 How often you called them
