happy or happily?

Hi everyone, I wish to know which is the right sentences and why? Thanks in advance.
(1) How happy the girls are playing!
(2)How happily the girls are playing!

Best Regards

eddy143 said:

Hi everyone, I wish to know which is the right sentences and why? Thanks in advance.
(1) How happy the girls are playing!
(2)How happily the girls are playing!

Best Regards

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The girls are playing. How are they playing? They are playing happily.

2 - happily is an adverb - it says how they do something, rather than what they're like. You need to find out about adjectives and adverbs. There are lots of related threads here, and lots of resources both here and elsewhere on the net.

b