he has tested vs he tested

Both "he has tested" and "he tested" are correct, but they are used in different contexts. "He has tested" is in the present perfect tense, indicating an action that started in the past and has relevance to the present. On the other hand, "he tested" is in the simple past tense, indicating an action that occurred and was completed in the past.

Last updated: March 25, 2024 • 994 views

This phrase is correct and commonly used in English.

"he has tested"

Use "he has tested" in the present perfect tense to indicate an action that started in the past and has relevance to the present.

Examples:

He has tested positive for the virus.
She has tested various methods to improve efficiency.
The team has tested the new software extensively.
Have you heard? He has tested negative for the disease.
The scientist has tested the hypothesis multiple times.

Show examples from the web [+]

"When He has tested me, I will come forth as gold."
He has never been tested like this before.
I gave them to Hodges, but he hasn't tested them yet.
He hasn't tested it yet because it doesn't exist, except in the computer.
The Boiuna has tested us before.
The captain has tested negative for alcohol and drugs.
Whale deaths have occurred in areas where the United States has tested the system.
The dome has tested our limits...
But none of the food has tested positive.
The soil here has tested very rich in some rare minerals.
The Boiúna has tested us before.
But time has tested Mr. Kendrick and he's failed that test.
Everything so far has tested negative for dimethylmercury.
The subject has tested negative on all accounts.
I should have you be aware that my face has tested positive for queefy sauce.
But what l've seen has tested my patience, not my faith.
There have been whale deaths in the areas where the United States of America has tested the system.
The Swedish newspaper, Göteborg Posten, has tested Björn Borg briefs for the chemical nonylphenol ethoxylate and found that the underwear contained between 490 and 860 milligrammes of the substance.
A Spanish research group has tested a new method for using by-products from the metal industry to produce bricks.
The Paris city council has tested a technology that harnesses heat from sewage and transfers it to local schools.

Alternatives:

He has been testing
He has conducted tests
He has tried out
He has experimented with
He has checked

This phrase is correct and commonly used in English.

"he tested"

Use "he tested" in the simple past tense to indicate an action that occurred and was completed in the past.

Examples:

He tested the new equipment yesterday.
She tested the recipe before serving it to guests.
The doctor tested his reflexes during the examination.
He tested the hypothesis and found it to be true.
The team tested the prototype extensively.

Show examples from the web [+]

Daddy didn't want his daughter marrying a security guard, so he tested one of his experiments on him.
When His Holiness called me to be his instrument, he tested my resolve.
He tested no mermers across the board, On each variable image.
He tested no mermers Across the board, On each variable image.
His choice was made when he tested positive.
Ian was promoted in ROTC and he tested out of English.
Then he got the respiratory problem, and he tested positive for Epstein-Barr.
And so what he did was he tested 1,000 ordinary people.
He's completely paralyzed, and he tested negative for botulism.
He's clean, he tested negative for everything.
That's why he tested two at once in here.
He has no injuries, and he tested negative for any bomb residue.
But he was so sure of what he was onto, that he tested it on himself.
And he tested with the actors to get the bartender job on Cheers.
- Was he tested for it?
You think he tested it on himself?
The car dealer says, it has to do with the power steering, he took it apart... he tested it...
If he tested positive for pinkeye, would you think that was his big problem?
And they 20 years, they called this guy "the mosquito man." But he ran an experiment in people, right? He had this hypothesis, and he tested it in people.
He tested negative for gunpowder in the paraffin.

Alternatives:

He did a test
He carried out a test
He tried out
He experimented with
He checked

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he has tested vs he tested

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