Successful landing on the Moon by the human being,which has magnificent significance,is the great milestone in the history of Aeronautics ..
你說的也可以.至于為什么不是successfully landing是因為landing在這里是名詞,而successfully是副詞,是用來形容動作,所以要用successful,not successfully.
不是,在這里,land后面加了ing,而且是作主語,所以只能算作名詞,不能用successfully.
如果說 This aircraft is landing,這時可用successfully來修飾.
英文里,有很多動詞+ing 變成了名詞,也有加其它后綴成為名詞,例如 prosper(使繁榮,v) + ity = prosperity(繁榮,n).所以你要根據(jù)句子來判定這到底是動詞還是名詞.