When we begin to learn a new language, we always are worrying about speaking and building up our vocabulary but we just sometimes we pay attention to other things as grammar. For that reason, as we progress us need to incorporate more grammar into our learning programme.
The structures of this, help us to hold the bricks of of vocabulary together. Without grammar, we wouldn't have a consistent language.
1. Present perfect simple
2. Present perfect progressive
3. Present perfect simple vs. Present perfect progressive
2. Present perfect progressive
3. Present perfect simple vs. Present perfect progressive