Should can be used with the perfect infinitive (have + past participle). This structure has several meanings. Should have + past participle This structure is used to talk about past events which did not happen. I should have posted that letter yesterday itself, but I forgot. She should have knocked at the door before entering [...]
Get Grammar Updates (It’s Free)
Free daily English grammar lessons and exercises
-
-
New posts
- Use the past simple with a past time reference May 19, 2013
- Object of a preposition May 18, 2013
- Phrasal verbs exercise May 16, 2013
- Like and without May 15, 2013
- Four ways to join clauses May 14, 2013
Grammar Checker
Author
Search
EnglishGrammar.org © 2013 - All rights reserved.