The past perfect tense is used to show that an action was completed before another action took place in the past. For example, "He had already left before I arrived." The present perfect tense is used to describe actions that happened at an unspecified time in the past or have relevance to the present. For example, "I have finished my homework."
Present perfect progressive and present perfect continuous refer to the same tense and are often used interchangeably. Both tenses indicate an action that started in the past and is ongoing or has just been completed. The choice between "progressive" and "continuous" is mainly a matter of dialect or personal preference.
The present perfect tense of "exist" is "has/have existed."
The present perfect tense of "hid" is "have/has hidden."
The present perfect tense of "was" is "have been".
The present perfect tense of "clap" is "have clapped" or "has clapped."
The difference in meaning is that the action stated by a present perfect tense may have been completed in the last second of time before the present, while the past perfect implies completion at a substantially earlier time. The formal difference is that the present perfect is formed from the present tense of "have", used as an auxiliary verb, combined with the past participle of the principal verb. For the past perfect tense, the past tense of "have" as the auxiliary verb is combined with the past participle of the principal verb.
Present perfect progressive and present perfect continuous refer to the same tense and are often used interchangeably. Both tenses indicate an action that started in the past and is ongoing or has just been completed. The choice between "progressive" and "continuous" is mainly a matter of dialect or personal preference.
Present perfect tense.
The present perfect tense of "hid" is "have/has hidden."
The present perfect tense of "exist" is "has/have existed."
present tense past tense future tense present perfect tense past perfect tense future perfect tense present progressive tense past progressive tense future progressive tense present perfect progressive tense past perfect progressive tense future perfect progressive tense
The present perfect tense of "was" is "have been".
The present perfect tense of "are" is "have been."
The present perfect tense of "clap" is "have clapped" or "has clapped."
The present perfect tense of leave is have/has left. The present perfect tense of eat is have/has eaten.
The present perfect tense is used to describe actions that are completed at the present moment or have relevance to the present. For example, "I have finished my homework." Future perfect tense is used to describe actions that will be completed before a specific point in the future. For example, "By next week, I will have completed my project."
"have tried" is the present perfect tense.