强调的类别说明例句。
原始句：last night i saw a film in theyouth palace.
为了强调句子的强调主语：it was i that (or: who) saw a
某一成分（通常是主film in the youth palace last night.语、宾语或状语），常用强调结构：
it is (was) +被强表示强调的it在这种结构的。
句子中作主句的主语。
强调宾语：it was a fiml that i saw in theyouth palace last night.
强调地点状语：it was in the youth palace
调部分+that(who)…that i saw a film last night.
强调时间状语：it was last night that i sawa film in the youth palace.
一般讲，原句的谓语动词如果是现在或将来各种时态，用it is…that (who)…；如果原句谓语动词是过去各种时态，则用itwas…that(who)…。
在强调主语时，that后的谓语动词要与被强调者保持人称和数的。
it is (was) +被强调部分+that(who)…
it is i who am a teacher.
即使被强调的主语是复数，主句中的谓语动词也用单数。
it is they who often help me with mylessons.
在强调时间、地点、原因、或方式状语时，不要用when,where,why
或how，而用that
注意点。it was because her mother was ill that shedidn't go with us.
在强调not … until结构中由until短语（或从句）表示的时间状语时，要用固定的强调句型。
it is(was) not until ..that...that从句中的谓语动词用肯定式。
my father didn't come home until 12o'clock last night.
it was not until 12 o'clock last night thatmy father came home.
在强调一般疑问句中的某一成分时，主句要用一般疑问句的语序：
把is/ was提到it前面。did this happen in beijing?
was it in beijing that this happened?⑥特殊疑问句中只有疑问词可以强调，其强调结构是“被强调部分（通。
常是疑问代词或疑问副词）+ is/was + it +that/ who +其它部分？"
where were you born?
where was it that you were born?⑦not…until…句型的强调句[**：学|科|网z|x|x|k]
句型为：it is/ was not until +被强调部分+ that +其它部分。
原始句：he didn’t go to bed until/ till hiswife came back.
强调句：it was not until his wife came backthat he went to bed.
此句型只用until，不用till。但如果不是强调句型，till, until可通。
用；因为句型中it is/ was not …已经是否定句了，that后面的从句。
要用肯定句，切勿再用否定句了。do sit down.务必请坐。
it is/ was …
谓语动词的强调谓语，如果需要强调谓。
语时，用助动词do/does或did。
he did write to you last week.上周他确实。
that …结构不能强调给你写了信。
do be careful when you cross the street.过马路时，务必（千万）要小心啊！此种强调只用do/does和did，没有别的形式；过去时用did，后面的谓语动词用原形。
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