主动换被动1 ecotourism provides holidays that protect the environment as much as possible.2 with ecotourism,visitors respect local traditions.3 ecotourism offers visitor accommodation that is environmentally-friendly.4 hotels are built from natu

主动换被动1 ecotourism provides holidays that protect the environment as much as possible.2 with ecotourism,visitors respect local traditions.3 ecotourism offers visitor accommodation that is environmentally-friendly.4 hotels are built from natu 主动换被动!1 ecotourism provides holidays that protect the environment as much as possible.2 with ecotourism,visitors respect local traditions.3 ecotourism offers visitor accommodation that is environmentally-friendly.4 hotels are built from nat 主动换被动 She will sell her house soon （英语初中）主动语态怎样换被动语态? 英语：主动变被动,被动变主动. 英语,主动改被动 英语主动转被动 怎样主动表被动 （英语初中）主动语态怎样换被动语态?（急）我上课没专心听,初中教的主动语态换被动语态…我要的是方法,不要复制!也不要太长. 英语主动化被动,就1句The fire frightened the firemen off.改成被动. 什么是不定式主动表被动?什么是不定式主动表被动 ..... read的时态.1一般现在时主动语态,被动语态 2.现在进行时主动,被动语态3.现在完成时主动,被动语态4.现在完成进行时主动语态5一般将来时主动,被动语态6.一般过去时主动,被动语态7.过去完成 主动表被动的动词、 sell是被动还是主动? 被动语态改为主动语态 sell何时主动何时被动? 主动销售与被动销售? 怎么成主动不被动