Question

何时用持续性动词

Answer 1

2）持续系动词
用来表示主语继续或保持一种状况或态度，主要有keep,
rest,
remain,
stay,
lie,
stand,
例如：
He
always
kept
silent
at
meeting.
他开会时总保持沉默。
This
matter
rests
a
mystery.
此事仍是一个谜。
-----------------
非延续性动词的否定形式可以与表示延续时间的状语连用。即动作不发生的状态是可以持续的。
（错）I
have
received
his
letter
for
a
month.
（对）I
haven't
received
his
letter
for
almost
a
month.
-----------
延续动词与瞬间动词
1)
用于完成时的区别
延续动词表示经验、经历；
瞬间动词表示行为的结
果，不能与表示段的时间状语连用。
He
has
completed
the
work.
他已完成了那项工作。
(表结果)
I've
known
him
since
then.
我从那时起就认识他了。(表经历)
2)
用于till
/
until从句的差异
延续动词用于肯定句，表示"做……直到……"
瞬间动词用于否定句，表示"到……，才……"
He
didn't
come
back
until
ten
o'clock.
他到10
点才回来。
He
slept
until
ten
o'clock.
他一直睡到10点。
典型例题
1.
You
don't
need
to
describe
her.
I
___
her
several
times.
A.
had
met
B.
have
met
C.
met
D.
meet
答案B.
首先本题后句强调对现在的影响，我知道她的模样，你不用描述。再次，several
times告知为反复发生的动作，因此用现在完成时。
2.---I'm
sorry
to
keep
you
waiting.
---Oh,
not
at
all.
I
___
here
only
a
few
minutes.
A.
have
been
B.
had
been
C.
was
D.
will
be
答案A.
等待的动作由过去开始，持续到现在，应用现在完成时。