您要查找的是不是：
- It is essential that he get up early. 他有必要早起。
- It is essential that we act quickly. 重要的是我们必须立刻行动。
- It is essential that those patients do not smoke. 那些病人不要抽烟，这是很必要的。
- It is essential that we learn a foreign language. 我们学一门外语很必要。
- It is essential that those patients not smoke. 那些病人不要抽烟，这是很必要的。
- Under the circumstances it is essential that. 在这种情况下。
- Under the circumstances it is essential that... 在这种情况下，...是很必要的。
- It is essential that he should be prepared. 有必要使他有所准备。
- It is essential that we are on time. 我们要准时，这是很必要的。
- It is essential that you abide by these rules. （遵守这些规则是必要的。）
- It is essential that you should come home early. 你有必要早点回家。
- It is essential that we win the game. 赢得这场比赛是绝对必要的。
- It is essential that he should be prepared for this. 有必要使他对此有所准备。
- It is essential that a scientific worker knows foreign languages. 科学工作者必须精通几门外国语。
- It is essential that all the facts be examined first. 首先核查全部事实是至关重要的。
- Therefore, it is essential that you ensure IIS is secure. 因此,确保IIS的安全性至关重要。
- It is essential that a scientific worker know foreign languages. 科学工作者必须精通几门外国语。
- It is essential that effective measures be taken to protect our civil rights. 有必要采取有效的措施来保障我们的公民权利。
- It is essential to balance one's budget. 量入为出是很重要的。
- It is essential to rally the broad masses of the people round. 把广大人民群众团结起来是极为重要的。
