brother – noun

can – verb, in this case, helping verb

achieve – verb

good – adjective

grades – noun (plural)

:]

my – pronoun

brother – subject

can achieve – both verbs, can used in conjunction with achieve to imply choice

good – adjective

grades – noun (plural)

“My brother” is the direct subject and “I” am/is the indirect subject. “can achieve” is the verb acting on the noun, “good grades”

I hope that’s what you were looking for… those are the parts of the sentence i could identify…

– me

I do not know which one sounds better, but, I hope this helps. Honestly, I do not know what question you are asking.

Just look up each word in the dictionary and see if it is a noun, verb etc

brother is a noun

can- I am stuck on this one –I am trying to find the ans.

achieve is a verb

good is an adjective

grades–noun

achieve = verb

good = adjective

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signed your grammar teacher