a host of修饰可数还是不可数
a host of修饰可数名词；表示一大堆；很多的意思；
He has a host of reasons.
他有很多理由。
He has a host of friends.
他有好多朋友。
A whole host of difficulties has ( have) arisen.
一大堆的困难出现了。
A host of unwelcome thoughts were pressing in on him.
一大堆恼人的心事涌上他的心头。
A host of problems may delay the opening of the Channel Tunnel
可能推迟英吉利海峡隧道开通的问题一大筐。
The cars have brought in their train a host of other problems.
汽车随之带来其他一大堆问题。