helppppppppppppppppp meeeeeeeeeeeeeeeeeee các thiên tài ơi ~~

21. Unless it rains, we will go for a picnic.

If .. not = Unless: trừ khi 

If 1: if + HTD, TLD

22. Some new equipment has been ordered by the company.

S + has/have + been  +V3/ed: bị động - HTHT

23. In spite of the bad weather, we had a picnic.

In spite of + N / Np / Ving, clause: mặc dù 

24. The bills have to be paid before the fifth of the month.

S + has/have + to be + V3/ed: bị độg

25. You didn't forget posting the letter, did you?

S + didn't + V1, did + S? câu hỏi đuôi 

26. Mrs. Green told her son to be careful when she crossed the street.

S + told + O + to V : câu tường thuật 

27. The tea was so hot that she couldn't drink it.

S + be + so + ADJ + that + clause: quá ... đến nỗi 

28. Apples are usually cheaper than oranges.

S + be+  ADJ + er+ than + O : ss hơn 

29. It was such a hard cake that I could not eat it.

S + be+  such + (a/an) + adj + N + that + clause: quá ... đến nỗi 

`color{orange}{~MiaMB~}`