詢問現在完成式問題

Grammar - OK
Logic - OK
Tense - OK

But it is better say "I have given Tom a pencil case".

As we usually say "pencil case" instead of a "pen case"

And you should also mention "Tom" in your sentence.

HOPE I CAN HELP YOU ^_^

But it is better say "I have given Tom a pencil case". ~ mssing the infinitive marker "to"
所以 GRAMMAR ~ not OK

It is better to say "I have given Tom a pencil case."
只是單獨句子文法 OK, 不理前因後果

I am not called in response anymore.
Box/Container is a special box used as a container for holding or protecting something;-a pen box/container
Present perfect is the form of a verb that shows a period of time up to and including the present, formed in English with the present tense of the verb "have " as in "I have given"," He has done, "He has gone". And a past participle "given, done, gone;"

Benny said to Tom:-
I have given a pen box/container last Saturday at 9 for the class meeting Or class Exam.
Date and time must be mentioned for a perfect meaning lee....

Try learn "preserve" instead of "present perfect":-
eg:-I think these traditional customs firing fire-crackers should be preserved.
eg:-The ship-wreck was preserved by the Barrier Reef sea bed.
eg:-They were determined to preserve their triad-leader from humiliate,ashamed, to lose respect of face.
eg:-The buzwoman actress had had managed to preserve her good looks.
eg:-if you preserve food,you treat it in order to prevent it from decaying so that you can store it for a long time.
eg:-I use only enough sugar to preserve the plums.apricots.
eg:-We need to preserve the forest etc.


2015-02-27 18:26:04 補充：
amendment:-I have given a pencil case.

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