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present perfect造句
1, The present perfect is covered in Unit 8. 2, '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. 3, The tense is present perfect progressive. 4, Explaining some topic already obtained uses present perfect tense. 5, To grasp the usage of the present perfect tense. 6, Past simple or present perfect? 7, The present perfect tense emphasizes the effect of the past action on the present. 8, Explain and illustrate the main use of the present perfect tense. 9, B. Rewrite the following sentences, using the present perfect continuous tense of the verbs in brackets. 10, A. Fill in the blanks with the present perfect continuous tense of the verbs in brackets. 11, Rewrite the following sentences using the Present Perfect Passive Voice. 12, There is no exactly equivalent French tense to the present perfect tense in English. 13, The sentences 'She has broken her leg' and 'I have never been to Australia' are all in the present perfect. 14, Complete the sentences using either the simple past or present perfect tense of the verbs. 15, The English stative passive voice sentences can be the simple present, the simple past,[http:///present perfect.html] the present perfect or the part perfect. 16, Sum up the new vocabulary in this Unit, and Present Perfect Tense.