The question of "all" vs. "all of" is more one of idiom than of grammar. ) Generally, you need "of" with "all" before certain pronouns (all of me), and never "of" before nouns with no determiner (all birds have feathers).
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The question of "all" vs. "all of" is more one of idiom than of grammar. There are times when "of" is necessary (All of us knew it.) and others when it is wrong (All the king's horses ….) Generally, you need "of" with "all" before certain pronouns (all of me), and never "of" before nouns with no determiner (all birds have feathers). The rest of the time, unless I forgot something, people use "
build air 940The club offers your dog all the comforts of home.
'all' and 'the' are analyzed as determiners. 'comforts' is the head of the NP (noun phrase) that has the function of direct object.
build air 940The club offers your dog all of the comforts of home.
'all' is the head of the NP 'all of th