Grammar Decoder
Understand complex grammar rules with simple explanations, examples, and interactive practice.
Grammar Topics
Quick Tips
- Read the example sentences aloud to internalize the pattern.
- Pay attention to time markers (yesterday, already, ever) to choose the correct tense.
- Practice writing your own sentences using the rule.
Present Perfect vs. Past Simple
Use Present Perfect for actions that happened at an unspecified time or have relevance to the present. Use Past Simple for actions at a specific past time.
Example
I have visited Paris (unspecified when) vs. I visited Paris last year (specific).
Common Mistakes
- Incorrect: I have seen that movie yesterday.
- Correct: I saw that movie yesterday.
Interactive Practice
Question: She ___ (finish) her homework already.
Want more practice?
Progress Overview
4
Topics Covered
12
Exercises Completed
85%
Accuracy
2
Streak (days)