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

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 air is to ( A.breath B.be breath The moring air is so good ( ) A to breath B to be breathed what i need is the air I breath and Ithe place rest my head是 "the morning air is so good to breathe "这句话中to breathe 做什么成分 一个英语问题：Did the air in the forest smell better than the air i 代指问题i'm moving to the countryside because the air there is m It is good for our health to breath fresh air语法是否正确? 英语填空1 going by air is too expensive.i don't like to take the The air is take to the air The air is full of the autumn wind,take a deep breath of thi