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haven't observed vs didn't observe

"Haven't observed" and "didn't observe" are equally correct, but they would be used in dissimilar contexts. "Haven't observed" is used when referring to something that has not been seen up to the present moment, while "didn't observe" is used when talking about a specific past event or time period.

Explained by Gregg
Editor at TextRanch

Last updated: December 21, 2024 • 7821 views

haven't observed

This phrase is correct and commonly used in English.

This phrase is used to indicate that something has not been seen or noticed up to the present moment.

Examples:

I haven't observed any changes in his behavior recently.
We haven't observed any improvement in the situation so far.

Show examples from the web [+]
Last updated: November 21, 2024

May 10, 2023 ... How to I search for species I haven't observed? General · y_liu_math May 10, 2023, 9:08am 1. I am wondering if the search function can filter ...
May 19, 2022 ... It's said that we haven't observed any population III stars because these stars are too far away, which makes them too dim to observe via ...
Apr 17, 2019 ... In other words, show me the most commonly observed life that I haven't observed myself yet. Is there a way to do that? 10 Likes. sgene April 17, ...
Mar 13, 2023 ... Can anyone answer me this one please what's the difference between the smoker and the vermilion smoker exactly haven't observed any differences ...
Apr 12, 2020 ... ... haven't observed. I'm seaching two much smaller areas than you, but I'm astonished there's a total of 38 Wood Anenome observations in my ...
Nov 4, 2014 ... We still haven't observed any Population III stars, so I suppose they count. They're, counter to the name, the oldest generation of stars ...
Jan 18, 2018 ... Page 2 of 2 - Messier list and the areas of sky I haven't observed much in - posted in Deep Sky Observing: I had some blind spots until I ...
May 26, 2024 ... ... haven't observed this in any other industry. Car people with good taste in cars don't always have the best style. Or food. But fashion ...
Jan 27, 2020 ... I haven't observed the flickering when the laptop is operating on its battery. Any hint what could this be? /Miguel. Manu January 27, 2020, 5 ...
Jul 31, 2022 ... While I haven't observed even subtle symptoms (head tilt) in my little girl, my concern is that spotnose is going to be similar to spider ...

Alternatives:

haven't seen
haven't noticed
haven't witnessed
haven't detected
haven't perceived

didn't observe

This phrase is correct and commonly used in English.

This phrase is used to talk about a specific past event or time period when something was not seen or noticed.

Examples:

I didn't observe any unusual behavior during the meeting.
She didn't observe any changes in the environment after the storm.

Show examples from the web [+]
Last updated: November 21, 2024

Oct 24, 2023 ... 52 likes, 2 comments - boxedvino on October 24, 2023: "I didn't observe my birthday this year but got to celebrate a lot of love at not one ...
Jun 13, 2019 ... Could not calculate Kneser-Ney discounts for 1-grams with adjusted count 3 because we didn't observe any 1-grams with adjusted count 2; Is ...
May 1, 2019 ... I didn't observe it last year, or the year before. That's because for children of Holocaust survivors, every single day is Yom Hashoah ...
Jan 27, 2023 ... Flux#last() didn't observe any onNext signal. and this is the chain i have return apiService.getAll(entry) .flatMap(response -> { if ...
Mar 6, 2023 ... I went thru the initial tuning steps prior to Autotune outlined in the wiki. I didn't observe any visual or audible signs of oscillations so ...
Aug 15, 2024 ... He didn't observe the passage of time with neanderthal concepts such as minutes or hours or years like we do. He passed through time in at ...
Aug 30, 2017 ... Actual behavior java.util.NoSuchElementException: Flux#last() didn't observe any onNext signal Steps to reproduce final String last = Flux ...
May 19, 2023 ... And many people paint their faces like skulls and a lot of ladies wear black mourning dresses . My family didn't observe Dia de Los Muertos ...
Dec 9, 2023 ... I'm a bit curious why they didn't observe more fungal species? 13 seems rather modest. The house of a thousand species: The untapped ...

Alternatives:

didn't see
didn't notice
didn't witness
didn't detect
didn't perceive

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