30.What a + Adj + N + S + V！= How + Adj + a + N + V！（多么！）例句：What an important thing it is to keep our promise！How important a thing is to keep our promise！遵守诺言是多么要紧的事！What an important thing it is to be honest！How important a thing is to be honest！诚实是多么要紧的事！
