simple是什么意思

simple
past
[英][?simpl
pɑ?st]
[美][?s?mp?l
p?st]
n（動詞的）一般過去式。
雙語例句：
1In
short,
the
simple
past
is
used
to
express
an
action
that
started
and
ended
in
the
past
簡言之，一般過去時用來表達(dá)開始并結(jié)束于過去的行為。
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
從根本上講，這家零售巨頭的推薦系統(tǒng)推薦的基礎(chǔ)是一系列基本元素:用戶過去購買過哪些商品；他們的虛擬購物車?yán)镉惺裁?；哪些商品被他們評價(jià)或“贊”過；其它用戶瀏覽及購買了哪些東西。
3Understand
the
meaning
of
the
simple
past
tense
使學(xué)生初步了解一般過去時的意義。
4Pretest
is
necessary
because
subjects
have
learned
English
simple
past
in
primary
five
and
the
first
term
of
primary
six
因?yàn)槭茉囋谖迥昙?、六年級上學(xué)期都學(xué)習(xí)過含有英語過去式的課程，所以首先進(jìn)行前測。
5Grasp
how
to
form
the
simple
past
tense
掌握動詞過去式的構(gòu)成。

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