怎么区分一般过去时和一般现在时

1．一般现在时与一般过去时共同点：
①两者均可表示人的性格、特征、爱好，以及习惯行枝性动作，常与频度副词：often,sometimes,seldom,usually,always,once
a
week,three
times
a
month,等连用。

Eg:
I
like
singing
.
I
liked
singing
when
I
was
a
child.

I
often
sing
.
I
often
sang
when
I
was
a
child.

②在条件和时间状语从句中，一般将来时要改为一般现在时，过去将来时要改为一般过去时。

Eg:
I
am
going
to
be
a
docter
when
I
grow
up
.

I
am
going
to
the
zoo
if
it
doesn’t
rain
.

The
weather
is
getting
warmer
and
warmer
when
spring
comes
.

2.
一般现在时与一般过去时的不同点：

①一般现在时表示现阶段发生的动作或状态，以及永恒不变的事实、真理和自然规律，常丛简与时间状语today,
every
day,
on
Sunday,
every
morning等连用。

Eg:
What
day
is
today
?

We
sometimes
go
to
the
park
on
Sunday.

They
ride
bikes
to
school
every
day.

I
get
up
early
every
morning
.

Spring
returns
in
March.

He
said
spring
returns
in
March..

The
sun
is
bigger
than
the
moon
.

②一般过去时表示过去阶段档郑敏发生的动作或状态，常与时间状语yesterday,last
year,
the
day
before
yesterday
,
the
month
before,this
morning,five
days
ago等连用。

Eg:
What
day
was
yesterday
?

We
sometimes
went
to
the
park
on
Sunday
last
year
.

They
rode
bikes
to
school
the
day
before
yesterday.

I
got
up
early
this
morning
.

I
lost
my
pen
five
days
ago
.