The moring air is so good ( ) A to breath B to be breathed

The moring air is so good ( ) A to breath B to be breathed The air is to ( A.breath B.be breath The morning air is so good____ breathe 为什么不是to be breathed?空 the moring air is so good to breathe 这里面不定式 to breathe 是做定语还 The morning air is so good _________.A to be bre 1.the doctor advised the room ____ A to air B to be air C to 英语 主系表结构问题主系表结构中,举个例子The air is good to breath.the air充当主语,i "the morning air is so good to breathe "这句话中to breathe 做什么成分 the morining air is so good to breathe 中的 to breathe做什么成分,为何 It is good for our health to breath fresh air语法是否正确? MY __OF HEARING IS NOT SO GOOD AS IT USED TO BE.A:STRENGTH B the morning air is so good to breathe为什么不用被动语态