The perfect aspect: explain a state due to something that happened before.
I have never been to Mexico.
She has lived here for thirty years.
The perfect aspect is used to talk about an action that happened before a focus time. The focus time can be past, present or future. The action is connected to the focus time. So, the perfect aspect tells us that the focus time is like this because of something that happened before.
In the present perfect, we are saying that now is different because of something that happened sometime before.
I have eaten lunch.Read more · 続きを読む
The present participle is made the following way:
[VERB]+ingRead more · 続きを読む