I want to be a doctor when I grow up.

Meaning: I have the desire to become a person who is trained to treat sick or injured people at the time when I become an adult.

Choice of Words: Doctor is a person who is trained to treat sick or injured people. Grow up means to become an adult. When means at what time.

Alternative Expressions

I dream of becoming a doctor someday.

Meaning: This sentence expresses the speaker's strong desire to become a doctor in the future.

Choice of Words: I is the first person pronoun, which refers to the speaker or writer. Dream is a verb that means to have a strong desire or wish for something. Of is a preposition that indicates a relationship between two things. Becoming is a verb that indicates a change in state or condition. A doctor is a noun that refers to a person who has received medical training and is licensed to practice medicine. Someday is an adverb that indicates a future time.

It's my ambition to be a doctor.

Meaning: This sentence expresses the speaker's strong desire to become a doctor.

Choice of Words: It's is a contraction of the words it and is. My is a possessive adjective that indicates ownership. Ambition is a noun that refers to a strong desire or goal. To be is a verb that indicates a state or condition. A doctor is a noun that refers to a person who has received medical training and is licensed to practice medicine.

Related Expressions