a number of前加be动词加啥子？the number of后加be动词加啥子？ a number of前加be动词(are还是is）？the...

a number of\u524d\u52a0be\u52a8\u8bcd\u52a0\u5565\u5b50\uff1fthe number of\u540e\u52a0be\u52a8\u8bcd\u52a0\u5565\u5b50\uff1f

a
number
of
\u524d\u9762\u7684Be
\u52a8\u8bcd\u53d6\u51b3\u4e8e
\u540e\u9762\u7684\u540d\u8bcd\u4e5f\u5c31\u662f\u8fd9\u4e2a\u8bcd\u7ec4\u6240\u4fee\u9970\u7684\u540d\u8bcd\u662f\u5355\u6570\u8fd8\u662f\u590d\u6570\u6216\u8005\u662f\u53ef\u6570\u8fd8\u662f\u4e0d\u53ef\u6570\u3002
the
number
of
\u540e\u9762\u7684be\u52a8\u8bcd\u662f\u5355\u6570\uff0c\u56e0\u4e3a\u5b83\u7684\u4e3b\u8bed\u5c31\u662fnumber,
\u540e\u9762\u5e94\u8be5\u5c31\u662f\u8ddf\u7740\u6570\u5b57\u7684\u3002
\u6bd4\u5982There
are
a
large
number
of
birds
in
this
region.\u8fd9\u4e2a\u5730\u533a\u6709\u5927\u91cf\u7684\u9e1f\u3002
The
number
of
birds
in
this
region
is
about
150,000.
\u8fd9\u4e2a\u5730\u533a\u9e1f\u7684\u6570\u91cf\u5927\u7ea6\u662f150\uff0c000\u3002

a
number
of\u662f\u201c\u8bb8\u591a\u201d\u7684\u610f\u601d\uff0c\u653e\u5728\u590d\u6570\u4e4b\u524d\u6240\u4ee5\u540e\u9762\u7528are
the
number
of\u662f\u201c\u2026\u2026\u7684\u6570\u91cf\u201d\u7684\u610f\u601d\uff0c\u6240\u4ee5\u540e\u9762\u7528is

a
number
of
前面的Be
动词取决于
后面的名词也就是这个词组所修饰的名词是单数还是复数或者是可数还是不可数。
the
number
of
后面的be动词是单数，因为它的主语就是number,
后面应该就是跟着数字的。
比如There
are
a
large
number
of
birds
in
this
region.这个地区有大量的鸟。
The
number
of
birds
in
this
region
is
about
150,000.
这个地区鸟的数量大约是150，000。

a
number
of是“许多”的意思，放在复数之前所以后面用are

the
number
of是“……的数量”的意思，所以后面用is

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