2 两个外刊句子的疑惑
①It was there that in 1958 that he saw a computer-programming job at Stockholm University’s Department of Meteorology advertised in the paper.
第一个that是 it + be + 强调部分 + that..吗？第二个that是引导定语从句？
②At the time he was doing this work there was a heated debate in America over the advisability of building supersonic airliners to ply the stratosphere—the engines of which, he and others realised, could produce nitrogen oxides in ozone-layer-crashing profusion.
请问老师，破折号前面的句子中有两个完整句子，he was... there was...该怎么理解呢，是省略that的定从吗？即At the time (that)he was...。可以这样使用吗？
句尾这个部分in ozone-layer-crashing profusion怎么理解呢？in profusion是大量/许多的意思，中间又插一个成分？
感谢老师为我解惑！
最佳答案 2021-03-12 16:46
① It was there that in 1958 that he saw a computer-programming job at Stockholm University’s Department of Meteorology advertised in the paper.
——第二个that多余，应删掉。此为强调句（亦叫分裂句），被强调成分是地点状语 there。改为：
It was there that in 1958 he saw a computer-programming job at Stockholm University’s Department of Meteorology advertised in the paper.
② At the time he was doing this work there was a heated debate in America over the advisability of building supersonic airliners to ply the stratosphere—the engines of which, he and others realised, could produce nitrogen oxides in ozone-layer-crashing profusion.
——At the time he was doing this work，整体为介词词短语，作时间状语，内含一个定语从句 he was doing this work，先行词为 time，省略关系副词为常态。 in ozone-layer-crashing profusion 是副词性词组 “in profusion” （大量地）的扩展，中间加上一个修饰语 ozone-layer-crashing ，而 ozone-layer-crashing 又是一个带连字符的合成词，意为“臭氧层（被）破坏”。从语法作用来讲，in ozone-layer-crashing profusion “整个词组作 “方式状语”，意思是：”以臭氧层被大量破坏的方式”（产生氮氧化物）。
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