kadioguy
Key Member
- Joined
- Mar 4, 2017
- Member Type
- Student or Learner
- Native Language
- Chinese
- Home Country
- Taiwan
- Current Location
- Taiwan
https://www.usingenglish.com/forum/t...ce-a-month-agoI suggest you start a fresh thread with one of those sentences and ask for comments. When that has been dealt with, move on to another sentence.
So I am posting this new thread with just four sentences below:
a. I've written a letter since lunchtime.
b. I've written a letter for an hour.
c. I've written six letters since lunchtime.
d. I've written six letters for an hour.
---------
Could you tell me which ones are incorrect or unnatural?
Could you tell me the reason?