先 再means first second...
又means you did it over one time.
ur sentence 先吃了苹果,又吃了香蕉,means u did the action 吃 over one time.
我又看到他了。what's the meaning of it?
yes, it means u saw him the second time or the third time...
又 means u did the action, so we usually use 又 了 together
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