پرسش‌ها با تگ (گرامر انگلیسی)

Medical research at the cellular level, ……… research on the immune system, has been  made possible through twentieth-century advances in techniques of genetic research. 

 Frederick lives ....... the hill, where all the mansions are.

توضیح دهید که با تغییر جمله به شکل‌های زیر، معنای آن چگونه تغییر می‌کند:   "If he knew about the meeting, he would attend it." "If he knows about the meeting, he will attend it."

در جمله‌ی زیر، نوع شرطی را مشخص کنید و توضیح دهید که چگونه معنای جمله با تغییر زمان افعال در بخش شرطی و نتیجه تغییر می‌کند: "If he had known about the meeting earlier, he would have attended it."

با سلام سوالی داشتم در مورد اینکه آیا ما به غیر از am_is_ are مجاز به استفاده از   Was -were برای افعال to be used to  هستیم یا خیر؟  و سوال دوم اینکه اگر مجاز هستیم  ، آیا   ...

 ....... the seventeenth century, artwork in Europe was quite different from what you see today.

 They realised that the police had them cornered and ........

 Manisha: What did you do at the weekend? Nicola: I -----tennis with my friend on Saturday.

 I have tried, honestly but ........

....... Saturday night, we went to a great movie and then had supper with the Johnsons.