پرسش‌ها با تگ (گرامر انگلیسی)

"I prefer coffee than tea "

The foreign student advisor recommended that she ……… more English before  enrolling at the university. 

When wood, natural gas, oil, or any other fuel burns, ……… with oxygen in air to produce heat.

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 ........