心养
不能省略的,后面一句话的意思是正因为这个原因,所以他觉得他永远不会版在数学权方面成功。 你可以这样理解,the reason for which he felt certain that..., 这样看你是不是觉得通顺点,其实是中国人的习惯啦,老外觉得都一样的,还有,不必这么拘泥于语法,意思看懂就可以了,你不喜欢可以不这么用for……reason引导的非限制性定语从句,如果将reason省略,for which he felt certain = he felt certain for which,感觉 which 已经在修饰第二个句子回了。而且答for从句作为对主句的说明或解释,一般不用定语从句,都是for (that) ……的句子比较常见。 下面有两个例句,可以看一下:The richer a state, the more it thrives by its relative luxury; for which reason it must take particular care not to make any relative sumptuary laws.Tacitus says that the Suiones, a German nation, has a particular respect for riches; for which reason they live under the government of one person.