“It is essential that...” 是英语中表示“……是必要的/必不可少的”常用句型，
后接从句时通常使用虚拟语气（即动词原形，或在英式英语中可用“should + 动词原形”）。
常见造句示例
- It is essential that every student submit their assignment on time.
- It is essential that he be informed of the changes immediately.
- It is essential that we protect the environment for future generations.
- It is essential that the documents remain confidential.
- It is essential that she attend the meeting tomorrow.
- It is essential that all employees follow the safety procedures.
- It is essential that the software be updated regularly.
- It is essential that you review your notes before the exam.
语法说明
在 “It is essential that...” 结构中，that 从句中的动词通常使用原形（尤其在美式英语中）， 这是虚拟语气的一种表现形式。例如：
- ✅ It is essential that he go now. （正确）
- ❌ It is essential that he goes now. （错误）
在英式英语中，有时也可接受 “should + 动词原形” 的形式，如：
It is essential that he should go now.，但更简洁的形式仍是直接使用动词原形。