students
learn
their
lessons
in
class.In
class
teachers
teach
them.
.
Student
sit
in
the
classroom
[listening]
to
the
teacher.
为什么用listening
因为listening是【
现在分词
】，listening
to
the
teacher在此是【现在分词短语】做【
伴随状语
】。即：listening是伴随sit这一动作同时发生的动作。
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