回答

・I learned a lot
・It was educational

在英語中「受益良多」可以使用
「I learned a lot」或「It was educational」 來表達。

I learned a lot是
「我學到了很多」
It was educational是
「受益良多」
的意思。

例句是
「Thank you for the lecture. I learned a lot from it.」
（意思：謝謝你的講座。我學到了很多た。）

或是

「The workshop was very informative and educational.」
（意思：研討會內容非常有益，受益良多。）

可以像這樣來使用這個表達方式。

有幫助｜0

回答

・I learned a lot today.
・Your lecture was very informative.
・Your lecture was very helpful.

有各種各樣的表達方式。
首先浮現在腦海中的，是以下的自然的英語。

I learned a lot today.
學到了很多。(受益良多。)

此外，我認為也可以使用以下的形容詞來表達。

informative　有益的
helpful　願意幫忙的，有幫助的

Your lecture was very informative.
Your lecture was very helpful.
你的講座很有用。(受益良多。)

-------------------------
I attended the famous professor's lecture, and I wanted to show my appreciation.
參加了知名教授的講座，因此想向本人表達感謝之情。

表達方式①
I learned a lot today. Thank you.
學到了很多東西。(受益良多。)謝謝你。

表達方式②
I learned a lot from your lecture, thank you.
從你的講座中學到了很多東西。(受益良多。)謝謝你。

表達方式③
Your lecture was very informative, thank you.
Your lecture was very helpful, thank you.
你的講座很有用。(受益良多。)謝謝你。

表達方式④
It was a wonderful lecture, and I learned a lot today. Thank you.
這是一場很棒的講座。而且受益良多。謝謝你。

有幫助｜0