Whether you stay or you go, it's your decision.

- Còn Subordinating conjuctions là những từ có thể kết nối  mệnh đề chính và  mệnh đề phụ của câu ghép chính phụ. Mệnh đề phụ có thể là  adverb clauses (mệnh đề trạng ngữ),  adjective clauses (mệnh đề tính ngữ),  hoặc  noun clauses (mệnh đề danh từ). 

EX: 

Adverb clause: Before you go, sign the log book.

Noun clause: He asked if he could leave early.

Adjective clause: That is the place where he was last seen.

 Do đó Subordinating conjuctions  gồm các loại sau:

- An Adverb : 

1. Adverbs of Place: where, wherever

2. Adverbs of Time:  when, how often, before, after, since, whenever, as soon as, till, untill

3. Adverbs of comparision: than, as...as, inasmuch as

4.  Adverbs of contrast: whereas, while

5. Adverbs of reasons: because, since, as, now that

6. Adverbs of condition: if, as if, even if, since, as though, unless, once

7. Adverbs of purpose: so that, in order that

8. Adverbs of manner: how

9. Adverbs of concession: although, (even) though, as long as, provided (that)

- A relative pronoun: that, which, who, whom, whose, why

EX: He who laughs last laughs best. 

- A noun clause:

EX: I know that he likes me.

Các bạn nhớ đừng dùng dấu gì trước Subordinating conjuctions. Trừ trường hợp  that, which, who, whom, whose dùng trong mệnh đề quan hệ không hạn định thì phải cần dấu phẩy.