can vs could：どちらが正しい？

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一番よく使われている表現はcanです。

can or could? : 意味と違い

「can」は能力や可能性を表すときに使います。例えば、「私は泳げる（I can swim）」と言います。一方、「could」は過去の能力や仮定の状況を示すときに使います。例えば、「私は子供の頃、泳げた（I could swim when I was a child）」と言います。また、「could」は丁寧な依頼にも使われます。例えば、「お願いできますか？（Could you please help me?）」というように使います。

canの例文

H例文でのcanの用法

I can swim very well.

She can play the piano beautifully.

They can finish the project on time.

He can speak three languages fluently.

We can go to the park later.

You can help me with my homework.

The dog can fetch the ball.

I can see the mountains from here.

She can cook delicious meals.

They can solve the puzzle together.
couldの例文

例文でのcouldの用法

I could go to the party if I finish my work.

She said she could help me with my homework.

If I had a car, I could drive you to the airport.

He could play the piano beautifully when he was younger.

They could see the mountains from their hotel room.

I could eat pizza every day and never get tired of it.

We could visit the museum this weekend if you want.

She could speak three languages fluently.

If it rains, we could stay indoors and watch movies.

I wish I could travel around the world someday.