it could be observed vs it could observed

The correct phrase is "it could be observed." The phrase "it could observed" is incorrect because it is missing the linking verb "be." In English, the verb "be" is necessary to form the passive voice in this context.

Last updated: March 20, 2024 • 2202 views

it could be observed

This phrase is correct and commonly used in English.

This phrase is used to indicate that something is possible to be noticed or seen.

Examples:

In the experiment, it could be observed that the reaction rate increased with temperature.
It could be observed from the data that there was a clear correlation between the variables.

Show examples from the web [+]

In the countries in which German development. [...] cooperation activities. [...] were concentrated, by 2020 it could be observed that positive results with these [. ..].
activities were concentrated, by 2020 it could be observed that positive results with these factors [...] had in turn had a positive. [...] impact on other factors which ...
It lasted for the entirety of the maximum 72 seconds for which it could be observed, suggesting a constant signal, and was at a frequency similar to that of ...
Jan 19, 2015 ... Currently, it could be observed by hemisphere sky-watchers by using strong telescopes. It could be seen in the northern hemisphere as it gets ...

Alternatives:

It could be seen
It could be noted
It could be detected
It could be perceived
It could be witnessed

it could observed

This phrase is incorrect in English.

Show examples from the web [+]

From the figure, it could observed globally that there is a slight increase in the amount of energy E, emitted by the standard discs with increasing percentage ...
Sep 22, 2009 ... Politically, it could observed through the government's adaptation to an essentially Confucian concept, 'the harmonious society' as a keyword ...
The FT-IR and thermal analyses are confirms the complete removal of the template after calcination at 773 K. From the XRD pattern, it could observed that zinc ...
are confirms the complete removal of the template after calcination at 773 K. From the XRD pattern, it could observed that zinc and silver which incorporated into ...

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it could be observed vs it could observed