English
posted by John .
1. What nice weather it is!
12. What a nice weather it is!
(Which one is right?)
2. What a tall building it is!
22. How tall the building is!
23. How tall a building is!
(Which one is the same as #2?
# 22 or #23? What is the meaning of #23)
3. What a tall dog it is!
What a big dog it is!
How tall the dog is!
How big the dog is!
(Which one is commonly used? Are all used commonly?)
4. She speaks good English.
She speaks a good English.
(Which expression is correct? Do we have to use 'a' or not before good English.)

English 
Writeacher
1. What nice weather it is!
12. What a nice weather it is!
(Which one is right?)
The first one is correct.
2. What a tall building it is!
22. How tall the building is!
23. How tall a building is!
(Which one is the same as #2?
# 22 or #23? What is the meaning of #23)
22 is the same as 2. 23 is not correctly written, although you might write, "How tall a building it is!"
3. What a tall dog it is!
What a big dog it is!
How tall the dog is!
How big the dog is!
(Which one is commonly used? Are all used commonly?)
The second and fourth ones are most common. "Tall" is not usually used to describe dogs.
4. She speaks good English.
She speaks a good English.
(Which expression is correct? Do we have to use 'a' or not before good English.)
The first one is correct. The word "a" should not be used in this context.
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