Bonjour
PRESENT PERFECT SIMPLE
have / has + Participe passé Base Verbale
a- Philip has been To the States.
b- I have thought about it.
c- What have you eaten ? Your lips are red.
d- Have you finshed reading this book?
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la forme have + been + V-ing est celle du present perfect continuous
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bonne journée ☺☺☺