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Remember this!

The past tense form of 'fluctuate' is fluctuated. Example: The stock prices fluctuated wildly last week. (The stock prices fluctuated wildly last week.)

Definition of “fluctuate”

to change or vary irregularly
to rise and fall in waves
to shift back and forth

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	fluctuated
Past Continuous	fluctuating
Past Perfect	fluctuated

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

The prices fluctuated unpredictably during the economic crisis.

Example

His weight fluctuated over the years.

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

The river levels were fluctuating due to heavy rainfall.

Example

I wasn't fluctuating my decision, I was firm about it.

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 they arrived, the prices had fluctuated significantly.

Example

She had fluctuated her opinion multiple times before settling on one.

Is fluctuated an irregular verb in the past?

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

Learn More About Tenses

Discover the present tense of fluctuate!

Discover the future tense of fluctuate!