1 Such a thing shouldn't be allowed to happen here,
2 Mistakes like this shouldn't be allowed to be made again.(特别注意有两个被动语态结构)
3 He shouldn't be allowed to waste his precious time.
4 It shouldn't be allowed to fish here.==Fishing shouldn't be allowed here.should be allowed to 造句来几个谢谢啦1 he should be allowed to join us2 the work should be allowed to be done tomorrow3 we should be allowed to take a five-day holiday in Japan.