obligation可数吗「obstruction可数吗」
responsibility 和obligation都是可数名词吗？
responsibility 和obligation都是既可作可数名词，也可作不可数名词。
单词responsibility和obligation有什么区别啊？
duty
n.指道义上的责任，强调自觉性，作可数名词时指本职工作的任务。
his
duty
is
to
see
that
the
business
runs
well.他的职责是保证生意良好运转。
obligation
n.指合同或法律上规定的"责任，义务"，强调其约束力。
parents
have
a
legal
obligation
to
ensure
that
their
children
are
provided
with
efficient
education
suitable
to
their
age.父母有法律上的义务确保其子女受到适合其年龄的有效教育。
responsibility
n.职责，强调对后果要负责任的意思。
his
father
is
ill,
and
he
has
the
responsibility
of
caring
for
him.他的父亲病了，他有责任照顾他。
responsibility,obligation和duty的区别
duty n.指道义上的责任,强调自觉性,作可数名词时指本职工作的任务.
His duty is to see that the business runs well.他的职责是保证生意良好运转.
obligation n.指合同或法律上规定的"责任,义务",强调其约束力.
Parents have a legal obligation to ensure that their children are provided with efficient education suitable to their age.父母有法律上的义务确保其子女受到适合其年龄的有效教育.
responsibility n.职责,强调对后果要负责任的意思.
His father is ill, and he has the responsibility of caring for him.他的父亲病了,他有责任照顾他.
obligation前面加a还是an
obligation前面加冠词an。
冠词一般放在名词之前，帮助说明该名词所指的对象。冠词分为不定冠词和定冠词两种。
不定冠词为a/an，用在单数名词之前，表示某一类人或事物的「一个」。
a用在以辅音开头的名词之前，an用在以元音开头的名词之前。
冠词只有一个the，表示某一类人或事物中特定的一个或一些。可用于单数或复数名词前，也可用于不可数名词前。
