we must harness it whenever possible as conventional fuels will not be around much longer.这句话的结构怎么分析,whenever possible as conventional fuels will not be around muchlonger做什么成分

we must harness it whenever possible as conventional fuels will not be around much longerwhenever是介词还是副词呢 语法老师we must harness it whenever possible as conventional fuels will not be around much longer.whenever possible as conventional fuels will not be around much longer在句中做什么成分呢,特别是whenever possible as,whenever 是什么 we must harness it whenever possible as conventional fuels will not be around much longer.这句话的结构怎么分析,whenever possible as conventional fuels will not be around muchlonger做什么成分 we must help it We must learn it It raining outside .we must ( ) we must fight it out we must protect ourselves （w） When the fire d----- is high,we must be careful.We must not have c--- in the countryside.We must put our rubbish bin.At home ,we must not cook w--- an adult,We must not play near a fire ,It's everyone‘s job not to s----- a fire.首字母填空 Wish we can in harness forever什么意思 Summer vacation is coming.We will visit World.I think it's interting.You must enjoy yourself.We w翻译一下好么 翻译 We must certainly work for it It's cold outside .You must put on w--- clothhes harness是什么意思 harness是什么意思 harness是什么意思 We must We must take ____(act) before it is too late