simple是什么意思

simple
past
[英][ˈsimpl
pɑːst]
[美][ˈsɪmpəl
pæst]
n（动词的）一般过去式。
双语例句：
1In
short,
the
simple
past
is
used
to
express
an
action
that
started
and
ended
in
the
past
简言之，一般过去时用来表达开始并结束于过去的行为。
2At
root,
the
retail
giant
's
recommendation
system
is
based
on
a
number
of
simple
elements:
what
a
user
has
bought
in
the
past,
which
items
they
have
in
their
virtual
shopping
cart,
items
they'
ve
rated
and
liked,
and
what
other
customers
have
viewed
and
purchased
从根本上讲，这家零售巨头的推荐系统推荐的基础是一系列基本元素:用户过去购买过哪些商品；他们的虚拟购物车里有什么；哪些商品被他们评价或“赞”过；其它用户浏览及购买了哪些东西。
3Understand
the
meaning
of
the
simple
past
tense
使学生初步了解一般过去时的意义。
4Pretest
is
necessary
because
subjects
have
learned
English
simple
past
in
primary
five
and
the
first
term
of
primary
six
因为受试在五年级、六年级上学期都学习过含有英语过去式的课程，所以首先进行前测。
5Grasp
how
to
form
the
simple
past
tense
掌握动词过去式的构成。

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