Identification （that）was aided by comparison with positive control samples p
rovided in the kit.
. Some two centuries later, smoking had become an ritual throughout the world
—a development (that was)much aided by the mass production of cigarettes in t
he 1880s.
Negro Extension Work(that is) Much Aided by Use of Movable Schools
()处是我自己填的
想请问板上大大 这样对吗
又来不耻下问了
感谢

对2个,错1个。第1个是错的。其实你还是不懂...如果要省略就关代和be动词一起省略,要还原就关代和be动词一起还原补回去,怎么会只补一个关代that...所以第一句原句Identification was aided by comparison..不是你新学的那个文法,他只是一个被动句..

不耻下问 即不以向身分低微或学问较自己浅陋的人求教为羞耻 《国语辞典》

从来没听过那所谓另一个解释。不懂成语就承认好吗？