Helpp:( Rewrite the following sentenses: 1.There are some chairs and a table in the kitchen. ->We have... 2.Not many people can understand his lecture. ->Only... 3.It is wrong of us to throw rubbish. ->We mustn't... 4.It is necessary for us to be present at the class discussion on Saturday. ->We must... 5.The tour guide tell us not to throw rubbish. ->The tour guide says that we...

`\text{1.}` We have some chairs and a table in the kitchen.

`->` S + have/has + O... .

`\text{2.}` Only some people can understand his lecture. 

`->` Dịch : Chỉ một số người có thể hiểu bài giảng của ông.

`\text{3.}` We mustn't throw rubbish .

`\text{4.}` We must be present at the class discussion on Saturday .

`->` must/mustn't + V_inf = những cụm từ it is necessary (for+sbd) to do sth . 

`\text{5.}` The tour guide says that we shouldn't throw rubbish .

`->` Cấu trúc câu khuyên bảo : Should + V_inf