Oceanlike
Senior Member
- Joined
- Nov 15, 2014
- Member Type
- Interested in Language
- Native Language
- Chinese
- Home Country
- Singapore
- Current Location
- Singapore
In a synthesis exercise, I encountered a question which I could answer but realised that I didn't understand the 'why' behind it.
Question: The fruit is not ripe yet. You cannot pluck it out.
My answer: You cannot pluck out the fruit until it ('until it' is fixed; cannot change its position) has ripened.
Instinctively, I used the helping verb 'has' instead of 'is'. I asked myself why couldn't I have used 'is ripened' and I was stumped. I don't know why (or I didn't know why).
'has ripened' simply sounds better than 'is ripened'.
1) Is there a grammatical rule that governs the usage of 'has' instead of 'is'?
2) is it incorrect altogether if 'is ripened' is used?
Thank you for teaching me :-D
Question: The fruit is not ripe yet. You cannot pluck it out.
My answer: You cannot pluck out the fruit until it ('until it' is fixed; cannot change its position) has ripened.
Instinctively, I used the helping verb 'has' instead of 'is'. I asked myself why couldn't I have used 'is ripened' and I was stumped. I don't know why (or I didn't know why).
'has ripened' simply sounds better than 'is ripened'.
1) Is there a grammatical rule that governs the usage of 'has' instead of 'is'?
2) is it incorrect altogether if 'is ripened' is used?
Thank you for teaching me :-D
