強(qiáng)調(diào)句判斷的依據(jù)就是去掉It was ...that之后句意不變,語(yǔ)法通順.
It was in 1949 that China was founded.
In 1949 China was founded.
你就記住把it was和that去掉看句子語(yǔ)法對(duì)不對(duì) 完不完整就可以了.
如果填which和when從句應(yīng)該是定語(yǔ)從句 修飾1949這個(gè)年份
It was 1949 when China was founded.
It was 1949 in which China was founded.
題目上的句子中in 1949這個(gè)介詞短語(yǔ)在句子中做狀語(yǔ)
用it is…that強(qiáng)調(diào)句就是強(qiáng)調(diào)這個(gè)狀語(yǔ)
而把in去掉只剩1949的話整個(gè)句子不完整了