`1` If we don't recycle , we'll waste natural resources .

`2` If you aren't careful , you will fall over the rocks .

`3` If you work too much , you can feel tired .

`4` If you put garbage into the bins , it will be the answer to minimize pollution .

`5` If he doesn't review the lesson carefully , he will fail the exam .

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`6` Because of her sickness , she didn't want to go out .

`7` I failed the exam because of not learning the lessons .

`8` Nobody can do this test because of the difficulty .

`9` We can't swim in this river because of the highly polluted water .

`10` The plane couldn't take off because of the bad weather .

`-` Từ câu `6` `->` `10` .

`-` Cấu trúc cụm từ chỉ lí do :

`@` S + V + O + because of/due to/owning to + V-ing/N + O .

`11` She suggests that her son (should) take part in the social activities .

`12` The doctor suggested that we (should) drink a lot of water to prevent sickness .

`13` I suggest that we (should) save natural resources .

`14` I suggest that Mrs. Loan (should) take some medicine because she has flu .

`15` I suggest that English lessons (should) be given to children for free .

`16` They suggest taking solid waste to recycling centers .

`-` Từ câu `11` `->` `16` .

`-` Cấu trúc câu đề nghị làm gì .

`@` S + suggest + V-ing + O ...

`@` S + suggest + that + S + (should) + V + O .

`17` The police officer who gave me directions how to get home was friendly .

`18` I like the painting that is in this room .

`19` Children who like to eat ice-cream can get toothache .

`20` The girl whom we met at the party is a singer .

`21` The oranges that George bought are on the table .

`22` A midwife is a woman who assists other women in childbirth .

`23` Do you know the girl to whom Tom is talking `?`

`24` The man whom I told you about works in the hospital .

`-` Giải thích từ câu `1` `->` `5` `(` Ảnh thứ nhất `)` .

`-` Giải thích từ câu `17` `->` 24` `(` Ảnh thứ hai `)` .