Question

it is that 强调后可以跟上whether吗？ 即it is 句型可以强调选择吗？

Answer 1

不能，it
is/was...that...强调句型为固定句型,判断正误的方法就是把it
is/was&that去掉，仍为完整正确的一句话就是对的，不是就是强调句型用错了。
这两句话句话是对的，但是不是强调句型，是it作为形式主语，真主语是that引导的从句。
建议你查一下强调句型和it作为形式主语的句子的区别。

Answer 2

你的句子是主语从句，不是强调句型。等于
1.
whether
the
government
will
consider
the
public's
ideas
has
been
an
essential
point.
2
whether
everyday
homework
is
necessary
for
students
has
been
spontaneously
considered
by
more
and
more
people.
假如改成强调句型；
It's
whether
the
government
will
consider
the
public's
ideas
that
has
been
an
essential
point.
It's
whether
everyday
homework
is
necessary
for
students
that
has
been
spontaneously
considered
by
more
and
more
people.
按照语法规则，对主语强调，完全可以，但实际确实较少，欢迎探讨！共同进步！

Answer 3

1.一般情况用It
is(was)……that…
可以强调主语、宾语、地点状语和时间状语。
.强调人时，可用that，也可用who；
It
was
Tom
who(that)I
met
last
week.
It
is
a
new
boke
that
his
brother
wants
to
buy.
没有用whether的It
is(was)……that…强调句结构。
希望满意，祝您进步：）