Question

He (show) me the picture just now..​

Answer 1

He has shown me the picture just now.

Explanation:

• The present perfect tense is related to an activity or state that has happened at an unknown time in the past.
• It is a grammatical mixture of the present tense and perfect feature that is used to show a past occasion that has a present effect.
• 'Have and has' are used with the past verb or second form of the verb, to form this tense.

Learn more about it.

What is present perfect tense?

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Answer 2

He showed me the picture just now.

• Usage of the phrase 'just now' in the above sentence suggests that the action has taken place just a few moments ago.

• In such a case, simple past tense of the verb is to be used as the action has taken place very recently and is completed.

• Here, the action is to show a book, and it has been completed just a few moments ago, hence, "showed" (simple past tense of 'show') is the correct form of the verb here.