http://www.englishpractice.com/improve/correct-present-perfect-tense-part-ii/ Learn English Online / Free English Learning Resources Fri, 14 Jan 2011 15:12:17 +0000 hourly 1 http://wordpress.org/?v=3.3.1 http://www.englishpractice.com/improve/correct-present-perfect-tense-part-ii/comment-page-1/#comment-72 lynne.28 Tue, 24 Nov 2009 03:43:59 +0000 http://www.englishpractice.com/?p=398#comment-72 When using the present perfect tense, the main verb must be in present tense and not in the past. If we use the past form of the main verb in the present perfect tense, it will create an error on your sentence. So, we must use past perfect tense when our main verb is in the past tense. When using the present perfect tense, the main verb must be in present tense and not in the past. If we use the past form of the main verb in the present perfect tense, it will create an error on your sentence.
So, we must use past perfect tense when our main verb is in the past tense.

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