主語+be being done。
例如：The shoes are being washed.
定義：表示此時此刻某事正在被做.例如：The sport meeting is being held in our school.我校正在舉行運動會.Another bridge is being built over the Yangtze River.長江上正在修建另一座大橋.
構成：be + being+過去分詞
A number of Dongfeng trucks are being shipped abroad.一批東風卡車正被運往國外.
用法：1)“be being done” 中的動詞be應隨主語作相應的變化。2)將現在進行時的主動語態變為現在進行時的被動語態的關鍵是：把be doing變為be being done.
例The students are cleaning the classroom now.→The classroom is being cleaned now.現在學生們正在打掃教室.(are cleaning變為is being cleaned)
例The boy is counting some eggs.→Some eggs are being counted.那男孩正在數雞蛋.(is counting 變為 are being counted)
主語+be being done。
例如：The shoes are being washed.
定義：表示此時此刻某事正在被做.例如：The sport meeting is being held in our school.我校正在舉行運動會.Another bridge is being built over the Yangtze River.長江上正在修建另一座大橋.
構成：be + being+過去分詞
A number of Dongfeng trucks are being shipped abroad.一批東風卡車正被運往國外.
用法：1)“be being done” 中的動詞be應隨主語作相應的變化。2)將現在進行時的主動語態變為現在進行時的被動語態的關鍵是：把be doing變為be being done.
例The students are cleaning the classroom now.→The classroom is being cleaned now.現在學生們正在打掃教室.(are cleaning變為is being cleaned)
例The boy is counting some eggs.→Some eggs are being counted.那男孩正在數雞蛋.(is counting 變為 are being counted)