Understand what adverb clauses are and you can identify them in the sentences.
Noun Clause
This will help you understand the noun clause.
Adjective Clause
Correct Grammar
Correct Grammar is our section which tells you how to speak correctly. Very often people keep making same grammatical errors in their sentences without realizing what is wrong. This section points out those common errors.
Phrase vs Clause
Phrases and clauses are often confusing. Hope these slides will help you understand better.