一般现在时 现在进行时 过去进行时和将来时的时态结构
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发布时间：2022-04-27 06:57
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时间：2022-06-28 03:01
一般现在时
1.概念：经常、反复发生的动作或行为及现在的某种状况。
2.时间状语：
always,
usually,
often,
sometimes,
every
week
(day,
year,
month…),
once
a
week,
on
Sundays,
3.基本结构：动词
原形
（如主语为第三人称单数，动词上要改为第三人称单数形式）
4.否定形式：am/is/are+not;此时态的谓语动词若为行为动词，则在其前加don't,如主语为第三人称单数，则用doesn't，同时还原行为动词。
5.一般疑问句：把be动词放于句首；用助动词do提问，如主语为第三人称单数，则用does，同时，还原行为动词。
6.例句：.
It
seldom
snows
here.
He
is
always
ready
to
help
others.
Action
speaks
louder
than
words..
现在进行时
1.概念：表示现阶段或说话时正在进行的动作及行为。
2.时间状语：now,
at
this
time,
these
days,
etc.
3.基本结构：am/is/are+doing
4.否定形式：am/is/are+not+doing.
5.一般疑问句：把be动词放于句首。
6.例句：
How
are
you
feeling
today?
He
is
doing
well
in
his
lessons.
过去进行时
1.概念：表示过去某段时间或某一时刻正在发生或进行的行为或动作。
2.时间状语：at
this
time
yesterday,
at
that
time或以when引导的谓语动词是一般过去时的时间状语等。
3.基本结构：was/were+doing
4.否定形式：was/were
+
not
+
doing.
5.一般疑问句：把was或were放于句首。
6.例句：At
that
time
she
was
working
in
a
PLA
unit.
When
he
came
in,
I
was
reading
a
newspaper.
一般将来时
1.概念：表示将要发生的动作或存在的状态及打算、计划或准备做某事。
2.时间状语：tomorrow,
next
day(week,
month,
year…),soon,
in
a
few
minutes,
by…,the
day
after
tomorrow,
etc.
3.基本结构：主语+am/is/are+going
to
+
do；will/shall
+
do.
4.否定形式：am/is/are
not
going
to
do
；will/shall
not
do。
5.一般疑问句：be放于句首；will/shall提到句首。
6.例句：They
are
going
to
have
a
competition
with
us
in
studies.
It
is
going
to
rain.
