This video tutorial introduces various prefixes such as im, un, re, dis, ir, miss, pre, en, non, ex, and in. Each prefix is explained with examples of words that use them, helping learners understand their meanings and applications.

What is the main topic of the video?

• Vocabulary

• Suffixes

• Prefixes

• Grammar

Which prefix is used in the word 'imperfect'?

• re

• im

• dis

• un

What does the prefix 'un' signify in the word 'unhappy'?

• Again

• Not

• After

• Before

Which prefix is used in the word 'rebuild'?

• dis

• re

• un

• im

What does the prefix 'dis' imply in the word 'disconnect'?

• Before

• After

• Together

• Apart

Which prefix is used in the word 'irregular'?

• re

• un

• ir

• mis

What does the prefix 'mis' suggest in the word 'miscalculate'?

• After

• Before

• Incorrectly

• Correctly

Which prefix is used in the word 'preheat'?

• en

• pre

• non

• ex

What does the prefix 'en' indicate in the word 'enlarge'?

• To make smaller

• To make larger

• To make equal

• To make different

Which prefix is used in the word 'non-toxic'?

• pre

• in

• non

• ex