You cannot assume that a speaker of English is ipso facto qualified to teach English.

你不能假定会说英语的人就有资格教英语。

《牛津词典》

They cannot teach about things that are not present, as far as we know.

到目前我们所知，它们不会教导不在眼前的事情。

youdao

The great author took the young man aside, saying, "I can teach you to write, but I cannot teach you to become a writer."

这名作家把年轻人拉到一边，说：“我能叫你如何写作，但是我不能教会你成为一名伟大的作家。”

youdao

In addition to the suspension, which begins today, Grisham cannot teach his fifth period psychology class for the remainder of the school year.

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But then, those who cannot do, teach.

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Collaborative technologies can fundamentally transform both how we teach and learn, but we cannot do it alone.

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