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.
"Is" is the singular form of the verb "to be," used with singular subjects. "Are" is the plural form used with plural subjects.
"Has" is a verb that is paired with a singular noun or pronouns as in: Bob has,he has, she has or it has. Plural nouns would use have, such as, The people have, we have, they have, you (all) have. Of course , have is also used with the singular pronoun I , I have.
As an auxiliary verb will is without number: He will go; they will go. As a main verb, it may be singular or plural: I will this to my heirs; they will it to their heirs.
Had is the past tense conjugation of the verb have, it is used for both singular and plural subjects.
The singular or plural form of "any" depends on the context of the sentence. When "any" is used in a negative or interrogative sentence, it typically takes a singular verb. When used in an affirmative sentence, it can take a singular or plural verb depending on the context.
'Discuss' is a verb. In english, only nouns and pronouns have singular and plural forms. the verb discuss can be used with both singular nouns and pronouns (I discuss) and plural nouns and pronouns (we discuss).
It depends on whether you are using the word series (pl series) in the singular or plural, e.g. there were ten series (plural) of 'Friends'; I enjoyed series one (singular) the most
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").
"Has" is singular, e.g. He has, she has. "Have" is plural, e.g. They have, we have. The exception is "I" - e.g. I have.
Yes, "did" is the past tense of the verb "do." It is used with singular and plural subjects.
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.