however as 区别________,when he started the research,he never gave up trying new ways to increase the production.我选的是however old he was,old as he was 为什么呢?________when he started the research,前面为什么不能用however？
问题描述：
however as 区别
________,when he started the research,he never gave up trying new ways to increase the production.
我选的是however old he was,old as he was 为什么呢?
________when he started the research,前面为什么不能用however？
答
when he started the research, 这句在中间，HOWEVER 那个选项不能选
在一个就是意思的问题，本句句意为：虽然他很老，。。。。而不是不论他多老
答
这里纯是语义选择了however的意思是"不论多么"as 在这里的意思是"正如,正像"翻译起来用however,"当他开始研究时,不论他多老,他从不放弃."用as,"当他开始研究时,像他当时那么老,他从不放弃."翻译过来好像不是很明确,...