Форма сослагательного наклонения в атрибутивных и предикативных придаточных предложениях
Форма should + infinitive (чаще встречается) или the present subjunctive (более характерно для официальных документов и AmE) используется после wish, advice, desire, demand, order, suggestion, agreement, request, proposal, decision, idea, aim, arrangement, doubt, hesitation, fear, apprehension, etc. После fear, apprehension следует союз lest.
The order that we should come surprised me. (attributive clause)
The order was that we should come. (predicative clause)
His suggestion that we stop and have a look round the castle was rather sudden. (attributive clause)
His suggestion was that we stop and have a look round the castle. (predicative clause)
Mary’s wish was that we should stay at her place as long as possible.
Your advice that he wait till next week is reasonable.
Our fear lest he should give away our secret was great.
Our fear was lest we should get lost in the forest.