Explanations:In English grammar, the use of verb tenses is crucial for accurately conveying the time frame of an action or state. The sentence "It _____ warm in Bengaluru yesterday" requires a verb that matches the time reference "yesterday," which indicates a past event. The correct verb to use in this context is "was," which is the past tense form of the verb "is."
The verb "is" is used in the present tense to describe a current state or condition. For example, "It is warm in Bengaluru today" would be correct if the sentence were referring to the present day. However, since the sentence is referring to a past event, the past tense form "was" must be used instead.
Understanding the correct use of verb tenses is essential for clear and accurate communication in English. The past tense is used to describe actions or states that occurred in the past, and it is formed by changing the base form of the verb to its past tense form. In the case of the verb "is," the past tense form is "was."
It is important to pay attention to the time reference in a sentence to determine the appropriate verb tense. In this case, the word "yesterday" clearly indicates that the sentence is referring to a past event, and therefore, the past tense form "was" is the correct choice.
Common mistakes students make when dealing with verb tenses include confusing the present and past tense forms, not recognizing the time reference in the sentence, and choosing the wrong form of the verb based on the context. To avoid these mistakes, it is important to carefully read the sentence and identify the time reference before selecting the appropriate verb tense.