should/∫ʊd/

v.

➊ the past tense of “shall”

➋ used to say sth is good or reasonable to do

➌ used to make a suggestion or ask for advice

否定缩略式

shouldn’t/'∫ʊdənt/

v. [M]

➊ [shall的过去式]

➋ 应当，应该，会：You should get some rest. 你应该休息一下。

◇The thief should be punished. 贼应当受罚。

◇[should have done sth] You should have been more careful. 你本应该更小心的。

➌ [用于提出建议或征询意见] 该，可以：You shouldn't worry about your interview. 你不应当担心你的面试。

◇What should we do? 我们应该做些什么？

音组-ould/-ʊd/

could; should; would

常犯错误

✗ He asked that it was done at once.

✓ He asked that it (should) be done at once. 他要求马上办此事。

[✌表示“命令、要求、建议”等动词的宾语从句要用可省略should的虚拟语气]

用法should和ought to 用法意思相同，但should 更常用。