Activate children's grammar by thinking about the general grammar area before they begin to study.
在开始学习之前，想一想通用的语法点，以此来激活孩子的语法。
Although babies begin to yawn spontaneously even before they leave the womb, most of the children in this study didn't show signs of contagious yawning until they were 4.
尽管婴儿甚至在离开娘胎之前开始不由自主地打哈欠，但在这项研究中的大多数孩子直到4岁才开始有打哈欠传染的迹象。
They begin to feel that the field is an unattainable goal, and the only thing that might help their game is to read and study some more.
他们刚开始感觉到这是个不可能完成的任务，觉得只能通过阅读和继续学习来了解这个任务。
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