So, I am pulling out the big guns...  The best way to learn parts of speech and parts of sentences..
Visualize.. Diagram..
You are welcome.

Go through sentences 1-30.. read through the sentences and understand how they are broken down and how specific parts of speech and parts of the sentence are diagrammed.  The latter sentences will get a little tougher, but try them.
http://www.german-latin-english.com/basicdiagrams.htm

THEN... go through sentences 1-45... these will help you visualize compound sentences, complements, and relative pronouns...
http://www.german-latin-english.com/basicdiagrams2.htm

Go through flash cards 1-7. Study both sides. Understand both the terms that are being addressed and the way of diagramming the sentence. I would take notes on everything. This is one of the most beneficial ways of visualizing how grammar works
http://www.german-latin-english.com/flashcards_of_sentence_diagrammi.htm

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Daily diagramming:
Extra help   http://www.german-latin-english.com/daily_diagrams_archives.htm

Jeopardy:
http://www.superteachertools.com/jeopardy/usergames/Apr201017/game1272292041.php