Page 151 - English Grammar - 8

 to join two similar sentences while using a conjunctive adverb, such as also, besides,
similarly, however, then, therefore, meanwhile, etc. For example:

You have completed your homework; therefore, you may go and play.
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 to connect items in a list which are separated by commas. For example:
The important dates in our school calendar are August 15, 1947; January 26, 1950;
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February 12, 2010; and April 12, 2017.

Colon (:)

A colon (:) expands the sentence that precedes it. It is used:
 to introduce a word, phrase, list or quotation. For example:

I have learnt quite a few languages: English, French, Mandarin, Hindi, Marathi, and
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Bengali.
 to give emphasis to what comes after an introduction. For example:
Forrest Gump did what he could do best: running.
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 before explanations. For example:
We decided to postpone the trip: it was raining.
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 after the reporting verb in direct speech. For example:
My mother said: “Don’t forget to buy bread.”
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Rememberemember
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A colon is never used after such as. For example:
• I need paints such as: blue, green, and pink. (incorrect)
I need paints such as blue, green, and pink. (correct)

Question Mark (?)
A question mark (?) is used:
 at the end of an interrogative sentence. For example:
Who is your teacher?
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 with a question starting with the verb forms to do or to be. For example:
Did you go to the party?
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 in a series even when it does not make a complete sentence. For example:
Which ice cream are you having? Orange? Chocolate? Or Fruit and Nut?
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 when a statement is spoken in the tone of a question. For example: Punctuation
Both of you will be here by 7 in the morning?
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 at the end of a question tag. For example:
Both of you will be here by 7, won’t you?
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Exclamation Mark (!)
An exclamation mark (!) is used to express surprise, amazement or a strong emotion.
For example:

Ouch! How terrible! Unbelievable!
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