The noun forms for the verb to observe are observer, observance, observation, and the gerund, observing.
A related noun form is observatory.
Only the month of May (a noun) can form a plural, and the plural of a month is formed by adding S (e.g. For the last few Mays, he has visited the village to observe the holiday). For January and February, an -ies form also may be used.
Occurrences is the plural of occurrence: On how many occurrences did you observe Mr. Gray waiting in the lobby?
Bridges is the plural form of bridge.
"Beliefs" does not have a plural form, as it is already plural. Beliefs is the plural form of belief.
There is no plural form for the word, countries. This word itself is a plural.
Only the month of May (a noun) can form a plural, and the plural of a month is formed by adding S (e.g. For the last few Mays, he has visited the village to observe the holiday). For January and February, an -ies form also may be used.
There is no plural form. Do and Do not are verbs
Occurrences is the plural of occurrence: On how many occurrences did you observe Mr. Gray waiting in the lobby?
The plural form of him, her, or it is them. (objective pronouns)
Bridges is the plural form of bridge.
The plural form of "was" is "were."
The plural form of "I" is "we."
The plural form of "is" is "are."
The plural form of mouth is mouths. The plural form of month is months. The Mounth is a range of hills in Scotland and does not have a plural form.
"Groceries" is the plural form of "grocery."
"Beliefs" does not have a plural form, as it is already plural. Beliefs is the plural form of belief.
The plural form of the demonstrative pronoun 'that' is those.