too...to,enough..to,so...that...用法 以及hear of 和 hear about 区别

too to 太……以至于不能……eg：Tom is too young to go to school。Tom太小了以至于不能去上学。too+形容词 to+行为动词enough to 足够……可以……eg：He is storng enough to do this work。他足够强壮来做这份工作。enough前+形容词so that 太……以至于eg：She was so sad that she couldn‘t say a word。他太伤心了以至于他无法说出话来。that后面跟从句hear of + sb。/sth:听到或知道某人[某事物]的情况 hear about + sth。:听到关於某事物的消息