中小学教育资源及组卷应用平台
人教版（Go
for
it）八上
U9
Can
you
come
to
my
party?
知识点讲解
P65
1c
invite
v.
邀请
invite
v.
邀请
invite
sb.
to
sth.eg:Lucy
invites
me
to
her
party.The
Smiths
invite
us
to
dinner.invite
sb.to
sp.
邀请某人去某地eg:
I'm
going
to
invite
my
friends
to
my
house
this
Sunday.
invite
sb.to
do
sth.邀请某人做某事eg:
Kim
invites
me
to
spend
my
summer
vacation
with
her
in
Tibet.invitation
n.
邀请,
邀请书make
an
invitation
提
出
/
发出
邀
请accept
an
invitation
接
受
邀
请decline/turn
down/
refuse
an
invitation
拒
绝
邀
请Thanks
for
your
invitation!
谢谢你的邀请
can
的用法
can
的用法
（１）表邀请。若接受邀请，回答为：OK./All
right./Sure./
Of
course./Certainly./Yes(Sure),I’d
love(like)
to./With
pleasure./Yes,
it's
very
nice/kind
of
you./Thank
you
(for
inviting
/asking
me.)若不接受邀请，回答为：Sorry,Ｉcan’t.(+原因)/Sorrr,I'm
afraid
I
can't./I'd
love
to
,but...
eg
：-Can
you
come
to
the
party?
-
Yes/Sure,I’d
love/like
to.
-Sorry,I
can’t.
I
have
to
help
my
parents.（２）表能力“能，会”否定句
can’t不能
eg.
He
can
swim,but
I
can’t.（３）在否定句，疑问句中表示“不可能”或“一定不”
eg.
Can
he
come
?No,he
can’t
come.
have
to
情态动词“have
to”与其他的情态动词如：“can”
,
“may”
“must”和
“should”
不同。（1）这4个情态动词没有人称和数的变化,而have
to有。它的第三人称单数为“has
to”
,过去时为had
to。（2）这4个情态动词在一般疑问句中将它们放在句首,
在否定句
中直接在他们后边加not即可。而“have
to”要加助动词do
；has
to要加助动词does
,还原
have
to；had
to要加助动词did,还原
have
to才可能完成其疑问、否定句。
have
to强调客观上需要做某事，即表示外界条件的需要不得不做某事，含有“客观所迫”的意味，它有人称和数的变化，可用于多种时态中，否定式为“不必”。
must强调说话者主观上认为必须做某事，含有“主观判断”的意味，它的否定式意为“禁止，不允许”。3.
have
构成的短语1)．have
a
rest/look/walk2)．have
a
meeting/class/lesson/drink（喝一杯饮料）
/party3)．have
breakfast/lunch/supper(dinner)/meals4)．have
a
good
time/have
fun
(in)
doing
sth.5)．have
a
try
试一试6)．
have
sth
on 穿戴着（不可用进行时）＝be
wearing
eg.
But
he
has
nothing
on.可他什么也没穿。7)．
have/let/make
sb.do
sth.=get
sb.to
do
sth.让某人做某事
eg.
I
have
the
students
answer
my
questions.8)．
have
sth.done 请／叫某人做某事
eg.Tim
will
have
his
hair
cut
tomorrow.
P65
1c
prepare
一、prepare用作及物动词时
1).?prepare?sth.表示“准备......”，后接名词或代词作宾语
e.g.?Our?English?teacher?was?preparing?the
lessons
when
I?came?into?the?office.
我进办公室时，我们的英语老师在备课。
2)当宾语是食物之类的东西时，可译为
“制；做”?e.g.Mother?was?preparing?dinner?in?the?kitchen?while?Father?was?
watching?TV.妈妈在做饭，而爸爸在看电视。
?3).?prepare?sb.?sth.表示"给......准备......"，=prepare?sth.?for?sb.?e.g.She?prepared?us?a?nice?breakfast.=?She?prepared?a?nice?breakfast?
for?us.她给我们准备了可口的早餐。
4).?prepare?sb.?for?sth.表示“使某人对某事有所准备”
例如：eg:She?said?so?because?she?wanted?to?prepare?her
father?for?the?bad?news.她这样说因为她想使爸爸对那个坏消息有准备。??5).?prepare?to?do?sth.表示“准备做......”。e.g.
They?were?preparing?to?cross?the?river
when?it?began?to?rain.
他们正准备过河，突然下雨了。?二、prepare用作不及物动词时：??prepare?for?sth.表示"为......做准备“e.g.?The?students?are?busy?preparing?for?the?final?exam.
P66
2c
available
available
/?'ve?l?bl/
adj.有空的；可获得的巧记available的用法：available很害羞，修饰名词后边走。
P66
2d
until
until
/?n't?l/
conj.&prep.
到……时；直到……为止until
+延续性动词（肯定句），意为“直到……为止”。其后可加名词（短语）作时间状语；或加句子，引导时间状语从句。eg:
I
stayed
until
he
came
back.
我一直呆到他回来为止。not...until直到......才
谓动通常为非延续性的，即not
+瞬间动词+
until
(否定句)，意为“直到……才”。
如：go,come,finish,stop,open,close
等。eg:I
didn't
go
to
school
until
my
mother
came
back.eg:She
didn't
finish
her
homework
until
9
p.m.until引导的时间状语从句中可用一般现在时表将来I
shall
wait
here
until
he
arrives.Alice
won't
leave
until
her
father
comes.
P66
2d
hang
hang
out
闲逛常用于美语口语中，还可以表示“常去某处；泡在某处”。eg：Where
do
you
hang
out
these
days?
这些日子你们都在什么地方闲逛？hang的规则与不规则形式：hang（悬挂）—hung—hung；hang（绞死）—hanged—hangedeg:
The
teacher
hung
the
English
alphabet
on
the
wall.
老师把一幅英文字母表挂在墙上。
The
criminal
was
hanged.罪犯被处以绞刑。hang的过去式巧记：规则的绞死不规则的挂
catch
catch
you
on
Monday.
周一见catch(V.)及时赶上，接住，抓住eg:He
started
late,
but
he
was
able
to
catch
the
8
o'clock
train.catch
up
with
sb.赶上某人eg:Please
slow
down,I
can't
catch
up
with
you.catch
a
cold
感冒eg:Tom
didn't
go
to
school
yesterday,because
he
caught
a
cold
P67
语法
情态动词can表示邀请的用法
情态动词can除了表示能力、许可、或猜测之外，还可以用来表示邀请。情态动词can表示邀请时用于一般疑问句中。句式：Can
+主语+动词原形+其他？eg:
Can
you
come
to
my
birthday
party?你能来我的生日派对吗？情态动词can表示邀请时，其回答分为两类。一类是表示接受邀请，另一类是表示拒绝邀请。（1）常见表示接受邀请的回答：①
Sure,
I’d
love
to.
②
Yes,
I’d
love
to.③
Sure.
That
sounds
great.（2）常见表示拒绝邀请的回答：①
Sorry.
I’m
not
available.②
I’m
sorry.
I’m
not
free
this
weekend.
I
have
to
...③
I’d
love
to,
but
I’m
afraid
I
can’t.
I
have
to...向别人发出邀请、请求、建议或征求某人的意见，还有几种表示方法，语气比较委婉。（1）Would
you
like
+名词/代词/动词不定式+
...?（2）Will/Would/Could
you
please+动词原形+...?（3）Shall
we
+动词原形+
...?（4）Let’s
+动词原形+
...（5）Why
not
+动词原形+
...?
Why
don’t
you
+动词原形+
...?（6）
How/What
about
+名词/代词/动词的-ing形式+
...?
P67
3b
accept
accept
/?k'sept/
v.接受eg:
I
received
his
gift
yesterday，but
I
didn’t
accept
it.
refuse
refuse
/r?'fju?z/
v.
拒绝refuse
sb./sth.
拒绝某人/某物eg：I
don't
think
he
will
refuse
me.我想他不会拒绝我。
She
refused
their
invitation.
她拒绝了他们的邀请。
P68
1c
—What's
today？今天是什么日期？—It's
Monday
the
14th.今天是14号，星期一。
—What's
today？今天是什么日期？—It's
Monday
the
14th.今天是14号，星期一。What's
today？用来提问今天是几号、星期几。回答时，通常用星期和日期，也可以用节日。eg：—What's
today？今天是什么日子？
—It's
Teachers'
Day.今天是教师节。(1)
What's
the
date
today？“今天是几月几号？”，回答的是日期。eg：
—What's
the
date
today?
今天是几月几号？
—It's
September
10th.九月十号。(2)What
day
is
it
today？意为“今天星期几？”
，回答的是星期几。eg：
—What
day
is
it
today？今天星期几？
—It's
Monday.星期一
P69
2b
reply
reply
/r?'pla?/
v．&n.
回答；答复reply作不及物动词，意为“回复”。reply
to...(with...)(以……)对……作出回复。
the
best
way
to
do
the
best
way
to
do做……的最好方法动词不定式(to
do)作后置定语，修饰前面的名词。eg：The
best
way
to
learn
English
is
to
use
it.
学英语的最好方法是使用它。
to
visit
my
aunt
and
uncle
to
visit
my
aunt
and
uncle为动词不定式短语作目的状语。eg:We
are
taking
a
trip
to
Shanghai
to
see
our
friends
tomorrow.有时可以把不定式(短语)提前，放于句首，强调目的。eg：To
learn
English
quickly
and
well,
he
went
to
England.
P69
2b
without
without“没有”,介词,后可+名/V-ing/代词Nothing
can
live
without
water.She
went
out
without
saying
a
word.I
can't
live
without
you.用于否定句，表示条件，可=if引导的否定条件句We
can't
finish
the
work
without
your
help.We
can't
finish
the
work
if
you
don't
help
us.
so
that
so
that
为了；以便so
that在此引导目的状语从句，从句中通常用may(might)或can(could)等情态动词。
eg:We
learn
English
so
that
we
may
get
more
knowledge.当so
that
从句的主语和主句的主语一致时，可用in
order
to
或不定式短语替换从句的开始部分，其意义基本不变。eg:
They
got
up
early
so
that
they
could
catch
the
first
bus.
→They
got
up
early
in
order
to
catch
the
first
bus.
→They
got
up
early
to
catch
the
first
bus.
look
forward
to
I
look
forward
to
hearing
from
you
all.
我期待收到你们所有人的来信。look
forward
to意为“盼望；期望”，其中to为介词，后面常接名词或v?-ing形式
，不可接动词原形。eg:
The
students
are
looking
forward
to
an
English
party.
look
forward
to
和
expect
二者都可意为“期待”，区别如下：(1)
look
forward
to指带着愉快的心情期待某事的发生eg：The
students
are
looking
forward
to
their
holiday.
(2)expect指确信某事必将发生，多用于好的事物，也可用于不好的事物。eg：I
didn't
expect
to
meet
you
here.forward
adv.
“向前地”，修饰动词，在句中作状语eg：The
seats
face
forward.
这些座位面朝前方。
She
hurried
forward
to
meet
him.
她急忙走上前去迎接他。
hear
from
hear
from
收到某人的来信其后接人名或表示人的代词，意为“
收到某人的来信”，
相当于receive/get
a
letter
from
sb.。eg：We
often
hear
from
him.我们经常收到他的来信。hear
from本身含有“信件”的意思，其后不能再接letter。
P71
3a
Please
reply
in
writing
to
this
invitation
by
Friday,
December
20th.
Please
reply
in
writing
to
this
invitation
by
Friday,
December
20th.
请于12月20日以前以书信方式回复此邀请。
1）reply
in
writing
表示“
以书面的形式进行回复”。其中reply相当于
answer，但要比后者更加书面化且正式许多。此处介词in表示方式，相当于汉语“
用……方式（形式）”之意。2）reply作动词时，不直接跟宾语，须由介词to
引入宾语内容，构成
reply
to
…
的结构。eg:Did
you
reply
to
these
letter?你回复这些来信了吗？3）在此句中，介词by
译为“
截止……;
…..之前到……为止”。介词before
也有“……之前”之意，但区别于before不包含其后的时间，
而
by
则包括。e.g.
You
should
get
your
homework
ready
by
Friday.
Remember:
Friday
is
the
last
day!
Can
you
come
and
meet
me
before
Friday?
I’ll
be
away
early
Friday
morning.
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Unit
9
Can
you
come
to
my
party?
知识点讲解
人教版
（Go
for
it)
八
年级上册
invite
v.
邀请
invite
sb.
to
sth.
eg:Lucy
invites
me
to
her
party.
The
Smiths
invite
us
to
dinner.
invite
sb.to
sp.
邀请某人去某地
eg:
I'm
going
to
invite
my
friends
to
my
house
this
Sunday.
invite
sb.to
do
sth.邀请某人做某事
eg:
Kim
invites
me
to
spend
my
summer
vacation
with
her
in
Tibet.
invitation
n.
邀请,
邀请书
make
an
invitation
提
出
/
发出
邀
请
accept
an
invitation
接
受
邀
请
decline/turn
down/
refuse
an
invitation
拒
绝
邀
请
Thanks
for
your
invitation!
谢谢你的邀请
1.
can
的用法
（１）表邀请。若接受邀请，回答为：
OK./All
right./Sure./
Of
course./Certainly./
Yes(Sure),I’d
love(like)
to./With
pleasure./Yes,
it's
very
nice/kind
of
you./Thank
you
(for
inviting
/asking
me.)
若不接受邀请，回答为：Sorry,Ｉcan’t.(+原因)/Sorrr,I'm
afraid
I
can't./I'd
love
to
,but...
eg
：-Can
you
come
to
the
party?
-
Yes/Sure,I’d
love/like
to.
-Sorry,I
can’t.
I
have
to
help
my
parents.
（２）表能力“能，会”否定句
can’t不能
eg.
He
can
swim,but
I
can’t.
（３）在否定句，疑问句中表示“不可能”或“一定不”
eg.
Can
he
come
?No,he
can’t
come.
2.情态动词“have
to”与其他的情态动词如：“can”
,
“may”
“must”和
“should”
不同。
（1）这4个情态动词没有人称和数的变化,而have
to有。它的第三人称单数为“has
to”
,过去时为had
to。
（2）这4个情态动词在一般疑问句中将它们放在句首,
在否定句
中直接在他们后边加not即可。而“have
to”要加助动词do
；has
to要加助动词does
,还原
have
to；had
to要加助动词did,还原
have
to才可能完成其疑问、否定句。
have
to强调客观上需要做某事，即表示外界条件的需要不得不做某事，含有“客观所迫”的意味，它有人称和数的变化，可用于多种时态中，否定式为“不必”。
must强调说话者主观上认为必须做某事，含有“主观判断”的意味，它的否定式意为“禁止，不允许”。
3.
have
构成的短语
1)．have
a
rest/look/walk
2)．have
a
meeting/class/lesson/drink（喝一杯饮料）
/party
3)．have
breakfast/lunch/supper(dinner)/meals
4)．have
a
good
time/have
fun
(in)
doing
sth.
5)．have
a
try
试一试
6)．
have
sth
on 穿戴着（不可用进行时）＝be
wearing
eg.
But
he
has
nothing
on.可他什么也没穿。
7)．
have/let/make
sb.do
sth.=get
sb.to
do
sth.让某人做某事
eg.
I
have
the
students
answer
my
questions.
8)．
have
sth.done 请／叫某人做某事
eg.Tim
will
have
his
hair
cut
tomorrow.
一、prepare用作及物动词时
1).?prepare?sth.表示“准备......”，后接名词或代词作宾语
e.g.?Our?English?teacher?was?preparing?the
lessons
when
I?
came?into?the?office.
我进办公室时，我们的英语老师在备课。
2)当宾语是食物之类的东西时，可译为
“制；做”
?e.g.Mother?was?preparing?dinner?in?the?kitchen?while?Father?was?
watching?TV.妈妈在做饭，而爸爸在看电视。
?3).?prepare?sb.?sth.表示"给......准备......"，也可转换为prepare?sth.?for?sb.
?e.g.She?prepared?us?a?nice?breakfast.=?She?prepared?a?nice?breakfast?
for?us.她给我们准备了可口的早餐。
4).?prepare?sb.?for?sth.表示“使某人对某事有所准备”
例如：
She?said?so?because?she?wanted?to?prepare?her
?
father?for?the?bad?news.
她这样说因为她想使爸爸对那个坏消息有准备。?
?5).?prepare?to?do?sth.表示“准备做......”。
e.g.
They?were?preparing?to?cross?the?river
when?it?began?to?rain.
他们正准备过河，突然下雨了。?
二、prepare用作不及物动词时：
??prepare?for?sth.表示"为......做准备“
e.g.?The?students?are?busy?preparing?for?the?final?exam.
available
/?'ve?l?bl/
adj.有空的；可获得的
巧记available的用法：available很害羞，修饰名词后边走。
until
/?n't?l/
conj.&prep.
到……时；直到……为止
until
+延续性动词（肯定句），意为“直到……为止”。其后可加名词（短语）作时间状语；或加句子，引导时间状语从句。
eg:
I
stayed
until
he
came
back.
我一直呆到他回来为止。
not...until直到......才
谓动通常为非延续性的，即
not
+瞬间动词+
until
(否定句)，意为“直到……才”。
如：go,come,finish,stop,open,close
等。
eg:I
didn't
go
to
school
until
my
mother
came
back.
eg:She
didn't
finish
her
homework
until
9
p.m.
until引导的时间状语从句中可用一般现在时表将来
I
shall
wait
here
until
he
arrives.
Alice
won't
leave
until
her
father
comes.
hang
out
闲逛
常用于美语口语中，还可以表示“常去某处；泡在某处”。
eg：Where
do
you
hang
out
these
days?
这些日子你们都在什么地方闲逛？
hang的规则与不规则形式：
hang（悬挂）—hung—hung；hang（绞死）—hanged—hanged
eg:
The
teacher
hung
the
English
alphabet
on
the
wall.
老师把一幅英文字母表挂在墙上。
The
criminal
was
hanged.罪犯被处以绞刑。
hang的过去式巧记：规则的绞死不规则的挂
catch
you
on
Monday.
周一见
catch(V.)及时赶上，接住，抓住
eg:He
started
late,
but
he
was
able
to
catch
the
8
o'clock
train.
catch
up
with
sb.赶上某人
eg:Please
slow
down,I
can't
catch
up
with
you.
catch
a
cold
感冒
eg:Tom
didn't
go
to
school
yesterday,because
he
caught
a
cold.
情态动词can表示邀请的用法
情态动词can除了表示能力、许可、或猜测之外，还可以用来表示邀请。
情态动词can表示邀请时用于一般疑问句中。
句式：Can
+主语+动词原形+其他？
eg:
Can
you
come
to
my
birthday
party?你能来我的生日派对吗？
情态动词can表示邀请时，其回答分为两类。一类是表示接受邀请，另一类是表示拒绝邀请。
（1）常见表示接受邀请的回答：
①
Sure,
I’d
love
to.
②
Yes,
I’d
love
to.
③
Sure.
That
sounds
great.
（2）常见表示拒绝邀请的回答：
①
Sorry.
I’m
not
available.
②
I’m
sorry.
I’m
not
free
this
weekend.
I
have
to
...
③
I’d
love
to,
but
I’m
afraid
I
can’t.
I
have
to...
向别人发出邀请、请求、建议或征求某人的意见，还有几种表示方法，语气比较委婉。
（1）Would
you
like
+名词/代词/动词不定式+
...?
（2）Will/Would/Could
you
please+动词原形+...?
（3）Shall
we
+动词原形+
...?
（4）Let’s
+动词原形+
...
（5）Why
not
+动词原形+
...?
Why
don’t
you
+动词原形+
...?
（6）
How/What
about
+名词/代词/动词的-ing形式+
...?
accept
/?k'sept/
v.接受
eg:
I
received
his
gift
yesterday，but
I
didn’t
accept
it.
receive（客观上）收到
accept（主观上）接受
accept
意为“接受”，主观上愿意接受。
receive
意为“收到”，指客观上收到或
拿到，但主观上不一定会接受。
refuse
/r?'fju?z/
v.
拒绝
refuse
sb./sth.
拒绝某人/某物
eg：I
don't
think
he
will
refuse
me.我想他不会拒绝我。
She
refused
their
invitation.
她拒绝了他们的邀请。
—What's
today？今天是什么日期？
—It's
Monday
the
14th.今天是14号，星期一。
What's
today？用来提问今天是几号、星期几。
回答时，通常用星期和日期，也可以用节日。
eg：—What's
today？今天是什么日子？
—It's
Teachers'
Day.今天是教师节。
(1)
What's
the
date
today？意为“今天是几月几号？”，
回答的是日期。
eg：
—What's
the
date
today?
今天是几月几号？
—It's
September
10th.九月十号。
What
day
is
it
today？意为“今天星期几？”
，
回答的是星期几。
eg：
—What
day
is
it
today？今天星期几？
—It's
Monday.星期一
reply
/r?'pla?/
v．&n.
回答；答复
reply作不及物动词，意为“回复”。reply
to...(with...)(以……)对……作出回复。
词条
含义及用法
例句
answer
及物动词，意为“回答”。多用于“回答问题(answer
the
question)”或“接电话(answer
the
telephone)”等。
Can
you
answer
my
question?
你能回答我的问题吗?
reply
reply比answer正式，一般指经过思考、有针对性地回答。reply不能直接带宾语，要加to,
即reply
to＝answer。
He
never
replied
to
any
of
my
letters.
他从来不回我的任何信。
the
best
way
to
do做……的最好方法
动词不定式(to
do)作后置定语，修饰前面的名词。
eg：The
best
way
to
learn
English
is
to
use
it.
学英语的最好方法是使用它。
to
visit
my
aunt
and
uncle为动词不定式短语作目的状语。
eg：We
are
taking
a
trip
to
Shanghai
to
see
our
grandparents
the
day
after
tomorrow.
有时可以把不定式(短语)提前，放于句首，强调目的。
eg：To
learn
English
quickly
and
well,
he
went
to
England.
without“没有”,介词,后可+名/V-ing/代词
Nothing
can
live
without
water.
She
went
out
without
saying
a
word.
I
can't
live
without
you.
用于否定句，表示条件，可=if引导的否定条件句
We
can't
finish
the
work
without
your
help.
We
can't
finish
the
work
if
you
don't
help
us.
so
that
为了；以便
so
that在此引导目的状语从句，从句中通常用may(might)或can(could)等情态动词。
eg:We
learn
English
so
that
we
may
get
more
knowledge.
当so
that
从句的主语和主句的主语一致时，可用
in
order
to
或不定式短语替换从句的开始部分，其意义基本不变。
eg:
他们早起以便能够赶上第一班公交车。
They
got
up
early
so
that
they
could
catch
the
first
bus.
→They
got
up
early
in
order
to
catch
the
first
bus.
→They
got
up
early
to
catch
the
first
bus.
so
that
多表目
的；表
结果
She
worked
hard
so
that
everything
would
be
ready
in
time.
so...
that...
表结果
She
spoke
so
quietly
that
I
could
hardly
hear
her.
I
look
forward
to
hearing
from
you
all.
我期待收到你们所有人的来信。
look
forward
to意为“盼望；期望”，其中to为介词，后面常接名词或v?-ing形式
，不可接动词原形。
eg:
The
students
are
looking
forward
to
an
English
party.
look
forward
to
和
expect
二者都可意为“期待”，区别如下：
(1)
look
forward
to指带着愉快的心情期待某事的发生
eg：The
students
are
looking
forward
to
their
holiday.
(2)expect指确信某事必将发生，多用于好的事物，也可用于不好的事物。
eg：I
didn't
expect
to
meet
you
here.
forward
adv.
“向前地”，修饰动词，在句中作状语
eg：The
seats
face
forward.
这些座位面朝前方。
She
hurried
forward
to
meet
him.
她急忙走上前去迎接他。
hear
from
收到某人的来信
其后接人名或表示人的代词，意为“
收到某人的来信”，
相当于receive/get
a
letter
from
sb.。
eg：We
often
hear
from
him.
我们经常收到他的来信。
hear
from本身含有“信件”的意思，其后不能再接letter。
hear
from
收到某人的来信
其后接人名或表示人的代词，意为“
收到某人的来信”，
相当于receive/get
a
letter
from
sb.。
eg：We
often
hear
from
him.
我们经常收到他的来信。
hear
from本身含有“信件”的意思，其后不能再接letter。
Please
reply
in
writing
to
this
invitation
by
Friday,
December
20th.
请于12月20日以前以书信方式回复此邀请。
1）reply
in
writing
表示“
以书面的形式进行回复”。其中reply相当于
answer，但要比后者更加书面化且正式许多。此处介词in表示方式，相当于汉语“
用……方式（形式）”之意。
2）reply作动词时，不直接跟宾语，须由介词to
引入宾语内容，构成
reply
to
…
的结构。如：
Did
you
reply
to
these
letter?你回复这些来信了吗？
3）在此句中，介词by
译为“
截止……;
…..之前到……为止”。介词before
也有“……之前”之意，但区别于before不包含其后的时间，
而
by
则包括。
e.g.
You
should
get
your
homework
ready
by
Friday.
Remember:
Friday
is
the
last
day!
Can
you
come
and
meet
me
before
Friday?
I’ll
be
away
early
Friday
morning.
谢谢
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