present perfect คือ review

11 months ago 17
Nature

The present perfect tense is a verb tense used to describe past actions that are related to or continue into the present. It is composed of two elements: the appropriate form of the auxiliary verb "to have" (present tense) and the past participle of the main verb. The structure of the present perfect tense can be analyzed with reference to positive, negative, interrogative, and negative interrogative types of sentences.

Examples of sentences in the present perfect tense:

  • Positive: "It has rained a lot this year"
  • Negative: "We havent seen her today"
  • Actions repeated in an unspecified period between the past and now: "They have seen that film six times"
  • Actions completed in the very recent past (+just): "Have you just finished work?"
  • Ingredients or materials: "I have not slept well since exams started"

The present perfect tense has specific constructions for standard statements, negatives, and questions. To use the present perfect tense in the negative, simply add the negative word (like not or never) after the auxiliary verb but before the past participle. When the sentence is positive, the tag is negative. When the sentence is negative, the tag is positive.