being 用作谓语动词构成被动语态时例句：He said resources from families and communities hosting the displaced are being stretched to the limit.这句话同He said resources from families and communities hosting the displaced are stretched to the limit.在句义理解上怎么区分?
问题描述：
being 用作谓语动词构成被动语态时
例句：He said resources from families and communities hosting the displaced are being stretched to the limit.这句话同He said resources from families and communities hosting the displaced are stretched to the limit.在句义理解上怎么区分?
答
正在进行时和一般现在时的区分，一个强调动作正在进行，另一个陈述事实
答
be stretched 被动语态,一般现在时；be being stretched 被动语态,正在进行时
他说,为移民提供住所的家庭和社区资源正在达到极限.（用正在进行时表示在达到极限的过程中）
第二句用一般现在时,表示达到极限,陈述一个事实.