単純過去と現在完了

K: This is Everyday Grammar. I’m Kaveh.

L: And I’m Lucija. Hey Kaveh, you’re looking a bit tanned. Did you go to the beach?

K: I did. I “went” to Florida last weekend. Have you ever gone to Florida?

L: Sure I have. I have “gone” there two years ago.

K: Wait. You mean, you “went” there two years ago.

L: What’s the difference?

K: Good question. You’re asking about the difference between the “simple past” and “present perfect” verb tenses.

K: I “went” to Florida is in the simple past. You use the “simple past” to talk about a past event that happened at a certain time. 

L: OK, that makes sense. But what about I “have” gone?

K: I “have” gone to Florida is in the “present perfect.” It shows that a past event happened at an unknown time.

L: Wait. But if it’s about the past why is it called the “present perfect?”

K: Well, it’s to emphasize the present effect of a past action.

Voice: I have graduated from college. (emphasizes present effect) I graduated from college. (emphasizes past effect)

L: Interesting. That’s a lot to think about. Is there an easier way to remember?

K: As a matter of fact, there is. Focus on the adverbs. Adverbs like “yesterday,” “ago,” and “last night” go with the simple past. Adverbs like “never,” “already,” “for” and “since” – they go with the present perfect.

L: Wow! I have never thought of it like that before.

K: And that’s Everyday Grammar.
- from NativeCamp

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