It was when he took a job in a company___he began to learn English.这个为什么填thatIt was at the workshop___we did research together two years ago.这个为什么填whereIt was the park where tom lost his watch.这个怎么又是that第三句

It was when he took a job in a company___he began to learn English.这个为什么填thatIt was at the workshop___we did research together two years ago.这个为什么填whereIt was the park where tom lost his watch.这个怎么又是that第三句
It was when he took a job in a company___he began to learn English.这个为什么填that
It was at the workshop___we did research together two years ago.这个为什么填where
It was the park where tom lost his watch.这个怎么又是that
第三句打错了，是That
It was the park where tom lost his watch.

It was when he took a job in a company___he began to learn English.这个为什么填thatIt was at the workshop___we did research together two years ago.这个为什么填whereIt was the park where tom lost his watch.这个怎么又是that第三句
第一句是强调句.不是定语从句.
第二句是where引导的定语从句,where是关系副词.表示地点,这里之所以区别于第一句不用that表示强调句有一个判断的绝巧.强调句的句型在去除了it was和that这两个部分以后还是可以组成一个完整的句子.比如第一题里面去了it was和that后：
when he took a job in a company,he began to learn English.
并不影响句子的意思.
第三句的话还是where引导的定语从句,也可以换成是which,但是前面要加介词in：
It was the park in which tom lost his watch.
注意,这里不能用that,因为that不能放到介词后面,有介词的话只能用which.
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强调句句型
1、陈述句的强调句型：It is/ was + 被强调部分（通常是主语、宾语或状语）+ that/ who（当强调主语且主语指人）+ 其它部分.
e.g.It was yesterday that he met Li Ping.
2、一般疑问句的强调句型：同上,只是把is/ was提到it前面.
e.g.Was it yesterday that he met Li Ping?
3、特殊疑问句的强调句型：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?
e.g.When and where was it that you were born?
4、强调句例句：针对I met Li Ming at the railway station yesterday.句子进行强调.
强调主语：It was I that (who) met Li Ming at the railway station yesterday.
强调宾语：It was Li Ming that I met at the railway station yesterday.
强调地点状语：It was at the railway station that I met Li Ming yesterday.
强调时间状语：It was yesterday that I met Li Ming at the railway station.
5、注意：构成强调句的it本身没有词义；强调句中的连接词一般只用that,who,即使在强调时间状语和地点状语时也如此,that,who不可省略；强调句中的时态只用两种,一般现在时和一般过去时.原句谓语动词是一般过去时、过去完成时和过去进行时,用It was … ,其余的时态用It is … .

第一句是强调句~~It is 。。。that when引导时间状语从句
第二句是定语从句where为关系副词
第三句你少打东西了吧？检查一下~~呵呵~~

It was when he took a job in a company___he began to learn English
"that"引导一个状语从句
It was at the workshop___we did research together two years ago
疑问词where后跟陈述语句
It was the park where t...

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It was when he took a job in a company___he began to learn English
"that"引导一个状语从句
It was at the workshop___we did research together two years ago
疑问词where后跟陈述语句
It was the park where tom lost his watch
这就是汤姆丢失他的手表的那个公园。公园是地点，用where

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