要should be allowd to do sth和shouldn't be allowd to do sth各三条,

.A frozen chicken should be allowed to defrost completely before cooking.
冻鸡应彻底解冻后再烹调.
No inferior products should be allowed to pass.
决不允许放过任何次品.
No erroneous ideas should be allowed to spread unchecked.
不能听任错误思想*泛滥
He asked that they shouldn't be allowed to leave.
他请求不许他们离开.
They shouldn't be allowed to do this.
父母不应该允许他们那样做
Sterling shouldn't be allowed to float.
不应允许英镑浮动.