At present there are many online courses and we can choose some to study by ourselves.
目前有很多在线课程，我们可以自己选择一些来学习。
With the teacher ill, we have to study by ourselves.
由于老师生病了，我们不得不自学。
His teaching style is very unique, because he is used to encouraging all of us to think by ourselves and study on our own.
他的教学作风很是与众不同，这是因为他老是风俗激励门生高兴思索，并且培育咱们的自学能力。
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