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Remember this!

The past tense form of 'specialize' is specialized. Example: He specialized in computer science during his college years. (He specialized in computer science during his college years.)

Definition of “specialize”

to concentrate on a particular area of study or work
to become an expert in a specific field

Tense sentence structure and examples:

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Notes from a Native English Speaker

Here are the general structures of a present and past participle. Remember, some verbs have an irregular form and may not follow this structure: Present Participle: [Verb] -ing Past Participle: [Verb] -ed

Past Simple	specialized
Past Continuous	specializing
Past Perfect	specialized

Past Simple

The simple past tense is used to describe completed actions or events that occurred at a specific point in the past.

Subject + Past Simple Verb + (Object)

Example

He specialized in marketing during his MBA program.

Example

She specialized in linguistics during her undergraduate studies.

Past Continuous

The past continuous tense is used to indicate actions or events that were in progress or happening at a specific point in the past.

Subject + was/were + Present Participle + (Object)

Example

At that time, he was specializing in international business.

Example

I wasn't specializing in any particular field at that point.

Past Perfect

The past perfect tense is used to show that one past action or event occurred before another past action or event, emphasizing the order of events in the past.

Subject + had + Past Participle + (Object)

Example

By the time she graduated, she had specialized in finance.

Example

He had specialized in neurology before switching to psychiatry.

Is specialized an irregular verb in the past?

No, "specialized" is not an irregular past tense verb.

Learn More About Tenses

Discover the present tense of specialize!

Discover the future tense of specialize!