Phrases and Clauses

What is a clause?

What is a phrase?

Is the following underlined part a phrase or a clause?

Hiding under the table, the dog knew he was bad.

In the following sentence, what is the underlined part?

Linda, a girl in my class, was absent today.

In the following sentence, what is the underlined part?

I study hard so I get good grades.

State whether the underlined groups of words are phrases or clauses.

1. It was an act of kindness.

2. The sun moves around the earth.

2. The sun moves around the earth.

3. I know a man who works in Merchant Navy.

5. We cannot survive without food or water.