-
九年级英语
Unit5
现在完成时态
⑴由
have/ has
+
过去分词
⑵
表示过去发生或已经完成的某一动作对现在造成的影响或结果
常与
already, just
, yet , ever
, never
连用
Have you
finished your work
yet
?你完成了你的工作了吗?
Y
es, I have. I have just
finished it.
是的。我刚刚完成了。
I have
already finished it .
我已经完成了。
Have you
ever been to China?
你曾经去过中国吗?
No, I
have never been there.
没有,我从来也没有去过。
⑶
①表示过去已经开始,持续到现在的动作
或
状态和表示过去某一时刻延续到现在(包括现在
在内)的一段时间的状态连用如:
(
for
+
时间段,
since
+
时间点,或过去某一动作,
以及
how
long
)
②
注:
非延续性动词在现在完成
时态中不能和
for, since
引导的表示一段时间的状语的肯定句连
用。
应转为相应的延续性动词
如:
buy----
have
die---- be dead
join ---- be
in
borrow----- keep
leave---- be
away
I have bought a pen.------
I have had a pen for 2 weeks.
The dog
has died.------- The dog has been dead since last
week.
⑷①
have (has) been to +
地点
去过某地
已经回来
②
have (has) gone to +
地点
去了某地
没有回来
③
have been in +
地点
一直呆在某地
没有离开过
如:
She has been
to Shanghai.
她去过上海。
(
< br>已经回来
)
She has gone to
Shanghai.
她去了上海。
(
没有回来
)
She has been in
Shanghai for 2 days.
她呆上海两天了。
(
没有离开过上海
)
1.
情态动词
must, may ,
might, could, may , can
’
t
表示推测含义与用法后面都接动词原形,都可以表
示对现在情况的揣测
和推断但他们
含义有所不同
must
一定
肯定
(100%
的可能性
)
may
, might,
could
有可能,也许
(20%
-
80%
的可能性
)
can
’
t
不可能,不会
(
可能性几乎为零
)
The dictionary
must be mine. It has my name on it.
The
CD might/could/may belong to Tony because
he likes listening to pop
music.
The hair band
can
’
t be
Bob
’
s. After all, he is boy!
2.
whose
谁的
疑问词
作定语
后面接名词
如:
Whose book is this? This
is Lily
’
s.
3.
belong to
属于
如:
That English book belongs
to me.
4.
当
play
指弹奏乐器时,常在乐器前用定冠词
如:
play the guitar
play the piano
play the violin
当
play
指进行球类运动时,则不用定冠词
如:
play football
play basketball
play baseball
5.
if
引导的条件状语从句,主句用一般将来时,
从句用一般现在时代替将来时
如:
If you don
’
t
hurry up, you
’
ll be
late.
如果你不快点,你将会迟到
6. if you
have any idea== if you know
如果你知道
7.
on
关于(学术,科目)
8.
try to do sth.
尝试做某事
如:
I try to climb the tree.
我尝试爬树。
9.
because of , because
because of +
名词
/<
/p>
代词
/
名词性短语
because +
从句
如:
I do it because I like it.
我做这件事是因为我喜欢。
I
had to move because of my job.
因为工作的原因我得搬家。
10.
own v.
-
owner n.
listen
v
.
-
listener n.
learn
v.
-
learner n.
11.
catch a bus
赶公车
12.
neighbor
邻居
指人
neighborhood
邻居
指地区也可指附近地区的人
13. local
当地的
如:
local teacher
当地的教师
-
-
-
-
-
-
-
-
-
上一篇:result的用法与搭配_用法辨析 英语语法.doc
下一篇:方字开头的成语大全