请简单介绍下英语中动词be（原形）的用法

Question

如题所述

Answer 1

is,
are
叫be动词,就是一般现在时
用的
你这句句子表达的是将来时,be要变成will
be
过去时
was
were
将来时
will
be

Answer 2

这个句子是错的，应该是：all
they
need
to
do
is
to
sit
in
front
of
their
computer
and
click
the
mouse.
他们需要做的事是坐在电脑前，点击鼠标。本回答被提问者采纳