怎样选择判断用that而不能用when(强调句和定语从句)

问题描述:

怎样选择判断用that而不能用when(强调句和定语从句)
It was on the morning of May 1st when I met my friend at the airport.( when为什么错?)
It was on the morning of May 1st that I met my friend at the airport.
1个回答 分类:英语 2014-11-18

问题解答:

我来补答
判断的依据是:将It was (is)...that...同时去掉,句中不缺省成分,则为强调句,否则有可能是定语从句或其他从句,要看具体问题进行分析.
该题中,如果把It was (is)...和所填部分去掉就形成了:“ On the morning of May 1st I met my friend at the airport." 或更通俗一点:“I met my friend at the airport on the morning of May 1st." 因此,其是一个针对时间状语进行强调的句子,因此只能填that(强调结构中的必要部分)而不能填when.
 
 
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