Writing sent in by Student - Michael Lim
You mentioned that you couldn't copied the files and all the files in the
original folder is disappear. In that case, you can login to our billing
system to check on it. Appreciate for your kind understanding.
www.michaellim.com (example URL)
Answer – after Grammar check
You mentioned that you couldn't copied (copy) the files and all the files
in the original folder is disappear. (had disappeared) In that case, you
could login (log in) to our billing system to check on it. Appreciate for
('for' is not needed here) your kind understanding.
1) 在 couldn't/could/can 之后的动词，必须是 base form → 不可有 ing, ed 或 s
2) 'had disappeared' 是 ‘已消失’ 的意思，动作发生在 'mentioned' 之前。'had disappeared' 的句型，是英文里的 Past Perfect Tense。 'is disappear' 这句型，在英文里并不存在。
3) log in 是动词，login 是名词。想学习如何分辨动词与名词吗？立刻成为会员
4) 当我们使用英文里的 appreciate 时，后面是不须要 for 的！例如：
I appreciate your help. 而并不是 'I appreciate for your help.'