“When my grandfather was in the hospital and was close to death, my parents did not take me to see him, as most parents with younger children would not. The reason behind this action is that they want the child to remember this person before they were frail and weak.”

Is the second comma in the first sentence necessary?

Yes, without that comma the sentence loses its clarity. I, however, would change the verb after "parents" to "would not"... to further balance and clarify the sentence. In addition, put "also would not" at the end.

I would also change "they" in the last part of the passage to a singular since the antecedent is "this person" -- there's a clear pronoun/antecedent error here.

http://grammar.ccc.commnet.edu/grammar/pronouns.htm

=)

having a problem trying to understand huckleberry finn`s malapropism,metapfor,satire and simile

Check this site:
http://www.sparknotes.com/lit/huckfinn/

The website SparkNotes provides comprehensive study guides for various literary works, including "Huckleberry Finn" by Mark Twain. To understand the literary techniques of malapropism, metaphor, satire, and simile in "Huckleberry Finn," you can refer to SparkNotes' analysis and explanations.

For malapropism, SparkNotes will likely provide examples of how characters in the novel use incorrect or absurdly similar-sounding words. Malapropism is a form of wordplay in which a character mistakenly uses a word that sounds similar but has a completely different meaning.

For metaphor, the website will likely highlight instances in the text where a comparison is made between two things without using "like" or "as." Metaphors create vivid imagery and help the reader understand the author's intended meaning.

Regarding satire, SparkNotes may explain instances in the novel where Mark Twain uses humor, irony, or exaggeration to critique or ridicule certain aspects of society.

Lastly, for simile, the website will likely provide examples of comparisons using "like" or "as" to describe similarities between two different things in the novel.

By using SparkNotes as a resource, you can gain a deeper understanding of these literary techniques in "Huckleberry Finn" and how they contribute to the overall meaning and themes of the book.