帮我分析一下这个句子的语法成分Consideringhowrecentthesedevelopmentsare,itisevenmoreremarkablethataslongageasthe1960s,anEnglishman,LeonBagrit,wasabletopredictsomeoftheusesofcomputerswhichweknowtoday.这句

　　帮我分析一下这个句子的语法成分

　　Consideringhowrecentthesedevelopmentsare,itisevenmoreremarkablethataslongageasthe1960s,anEnglishman,LeonBagrit,wasabletopredictsomeoftheusesofcomputerswhichweknowtoday.

　　这句话中一定要详细的分析一下itisevenmoreremarkablethataslongageasthe1960s这个分句的成分和结构尤其是that后面这个状语为什么要用that引导?把that去了不行吗?

　　还用Considering是不是引导的伴随状语?

　　提出的问题一定都要回答啊!