1. 'I have eaten' is the present perfect tense of the verb 'to eat', 'I had eaten' is the past perfect and 'I will have eaten' is the future perfect.
2. Explaining some topic already obtained uses present perfect tense.
3. To grasp the usage of the present perfect tense.
4. The present perfect tense emphasizes the effect of the past action on the present.
5. Explain and illustrate the main use of the present perfect tense.
6. There is no exactly equivalent French tense to the present perfect tense in English.
7. Complete the sentences using either the simple past or present perfect tense of the verbs.
8. Sum up the new vocabulary in this Unit, and Present Perfect Tense.