Yes. Which one is used depends on whether the subject of the sentence is singular or plural. If, when used as a conjunction, is never the subject of the sentence. The only time it can be is when the sentence is talking about the word if. A simple example is the sentence "if is a conjunction." A more complex example is the first sentence of this paragraph. In both these sentences the verb is singular because we are talking about a single if. In the sentence "too many 'ifs' can spoil a debate" spoil is plural because there are a number of ifs. The preceding paragraph may be a bit of a head-banger, but the good news is that it's maybe only once per million sentences that if is used as anything but a conjunction.
Sales can be both singular and plural. Sales when referring to multiple transactions is plural but when used as a description of employment, i.e., I work in sales - it is singular.
Checks, for the noun. As a verb, "check" is the plural, and the 3rd person singular form is "checks."
Yes, sneezes is the third person singular form of the verb sneeze. It is also the plural form of the noun sneeze.
They are parts of the verb To Be.'Is' is the present tense third person singular (i.e. 'he/she is').'Are' is used for all other present tense forms except the first person singular (which is 'I am'). Thus, 'you are', 'we are', 'they are').
No, it is not. It is a noun, the plural of the noun boot.It can also be the 3rd person singular, present tense conjugation of the verb to boot.The past participle (booted) can be used as an adjective.
The verb reviewed is used after both singular and plural nouns.
Had is the past tense conjugation of the verb have, it is used for both singular and plural subjects.
Troop can be used with both singular and plural verb depending on the context. When referring to a single organized group, it takes a singular verb (e.g., "The troop is marching"). When referring to multiple groups or individuals, it takes a plural verb (e.g., "The troops are assembling").
With 3 liters of milk, a singular verb should be used because "3 liters" is serving as a single unit of measurement in this case.
Yes, it is incorrect. Even though the pronoun "you" can be singular or plural, it is ALWAYS used with a plural verb! The verb "was" is singular, so that is incorrect.
The pronouns used with the verb 'to be' are:I am (first person, singular)You are (second person, singular)He/she/it is (third person, singular)We are (first person, plural)You are (second person, plural)They are (third person, plural)
The verb "attend" can be singular or plural depending on the subject it is paired with. For example, "she attends" is singular while "they attend" is plural.
It's a verb so it can't really be singular or plural, but it has to be the verb of a singular subject.
Singular. Plural is: they are, have and do.
's is a contraction of the verb "is" or "has" and is used with both singular and plural nouns. For example, "John's cat" (singular) and "The cats' toys" (plural).
Headquarters is both singular and plural.
"Does" is singular. It is the third person singular form of the verb "do."