1. In ` This is my bike', ` this'is a demonstrative pronoun.

2. 23 In ` This is my bike', ` this'is a demonstrative pronoun.

3. In the sentence 'This is my brother', 'this' is a demonstrative pronoun.

4. 21 In the sentence 'This is my brother', 'this' is a demonstrative pronoun.

5. Most commonly, an Antecedent has a personal pronoun, as it does in the previous example (her), a demonstrative pronoun