ความคิดเห็นที่ 2
Your question looks simple, but giving you an answer in a nutshell is no simple task!
There are so many rules for punctuation. A good book for this subject is
"Eats, Shoots & Leaves
The Zero Tolerance Approach to Punctuation
by Lynne Truss"
Anyway, the words "and", "so" and "but" you just mentioned are coordinating conjunctions.
The general rule for using punctuation with coordinating conjunctions is the following:
Use a comma before a coordinating conjunction only when it joins two independent clauses. When two words, phrases, or dependent clauses are joined, no comma is used before the coordinating conjunction.
Example: A. Bob and Jack were surprised by the news.
In this example, "and" is a coordinating conjunction joining two words of equal grammatical importance: "Bob" and "Jack" are both nouns. No comma is used before the conjunction because the coordinating conjunction "and" does not join two independent clauses; rather, it joins two nouns to make a compound subject in a simple sentence.
Example: B. Did you search in the bedroom or in the kitchen?
In this example, "or" is a coordinating conjunction joining two prepositional phrases of equal grammatical importance and construction: "in the bedroom" and "in the kitchen". No comma is used before the coordinating conjunction "or" because it does not join two independent clauses, but rather it joins two prepositional phrases to make a compound prepositional phrase in a simple sentence.
Example: C. The explanations were clear, and the examples were easy to understand.
In example C, "and" is a coordinating conjunction joining two clauses of equal construction, both of which are independent clauses: "the explanations were clear" and "the examples were easy to understand ."A comma is used before the coordinating conjunction because it joins two independent clauses to make a compound sentence.
จากคุณ :
white rabbit
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22 ก.พ. 52 13:49:00
A:124.121.97.181 X:
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