Some linguists in the Grammar-translation Method insisted that the human brain could be trained by three approaches in terms of language. What are they?

Some linguists in the Grammar-translation Method insisted that the human brain could be trained by three approaches in terms of language. What are they?

They are 1) logical analysis of the classic language, 2) extensive memorization of complicated rules and 3) translation between languages.
全题共5分,答案含三点,1),2)每点2分，3)为1分。如表述中有语法、拼写、标点等问题,酌情扣分,但全题在这方面的扣分不得超过1分。