introduction的复数形式为introductions,introduction为可数名词; introduction作介绍、引荐时是不可数; 例句 She was punctilious in the matter of int...
waste 当垃圾废弃物讲时,是不可数名词,没有复数形式。 例句 Up to 10 million tonnes of toxic wastes are produced every year in the UK. 英国每年会产...
deviation n. 偏差;误差;背离 作背离讲的话不可数,但若是作离经叛道的行为讲的话可数 例句 What is deviation detection? 什么是偏差检测? This is a pos...
impression是不可数名词,意思是印象、效果。 例句 This is an artists impression of the new stadium. 这是一位艺术家对未来新运动场作的印象画。 I get ...
which引导的定语从句例句A shop should keep a stock of those goods which sell best(商店应存有最畅销的货物);This is a reason which we must not for...
turtle n. 龟,甲鱼;海龟; 例句 The Mock Turtle went on. 假海龟继续讲。 The Mock Turtle repeated thoughtfully. 假海龟若有所思地重复着。 This is ...
waste作\"浪费,废料,垃圾等\"的时候是\"不可数名词\";作\"荒地,荒漠,凄凉的景象\"的时候是\"可数名词\"。 例句 I hate unnecessary waste. 我憎恨不必要的...
bad day是可数名词,如果用day,应该是What a bad day; bad day 糟糕的一天; bad adj. 令人不快的;问题成堆的;坏的;质量差的;不合格的;拙于;不擅;不善于;...