语法`could.can.be able to.manage to的区别和用法

Question

如题所述

Answer 1

常用方法：manage
to
do
sth.
如：I
at
last
managed
to
solve
the
problem.
can/could
do
sth.
表示一般的能力。如：He
can
speak
English
well.
be
able
to
和can/could
一样表示能力。但有人称和数，及时态的区别。如：I
will
be
able
to
fill
in
with
the
life
there.
注：be
able
to
用于过去时态中，可表示：“过去成功地做到了某事”was/were
able
to
do
sth
=
managed
to
do
sth.=
succeeded
in
doing
sth.