Rain can be dangerous; it makes the roads slippery.
Method III: Using a semicolon and an adverbial conjunction:
My parents checked my homework every night; thus I did well at school.
She gave me good advice; moreover, she was always ready to help.
(Put a comma after the conjunctive adverb if the conjunctive adverb is more than one syllable long.)
Subordination
Method IV: Using a dependent Clause to Begin a Complex Sentence:
Because my car had a flat tire, I was late for work.
Method V: Using a Dependent Clause to End a Complex sentence:
I was late for work because my car had a flat tire.
Punctuating Relative Clauses (defining and non-defining)
Method VI: Relative Clauses that are essential to the meaning of the sentence do not require commas (Defining Relative Clause):
The poem that my classmate read in class was very powerful.
Method VII: Relative Clauses that are not essential to the meaning of the sentence require commas (Non-Defining Relative Clause)
Mother's fruit salad, which consisted of apples, grapes, and pears, was delicious.