13. How did you sign the letter?
你在信上是怎樣署名的？
還能這樣說：
What did you add your signature to the letter?
How did you put your name in the letter?
應用解析：
take sth. in the letter 從字面意義上理解某事；
to the letter 嚴格按照字句
14. Do you know how to write an English letter?
你知道怎樣用英語寫信嗎？
還能這樣說：
Can you tell me how to write in English?
Could you let me know how to write in English?
應用解析：
nothing to write home about 不值得大書特書的事情；平平常常；
write over 改寫，重寫
15. Don't forget to drop me a line.
別忘了給我寫信。
還能這樣說：
Remember to write to me.
Don't forget to write me a letter.
諺語：
One must draw the line somewhere.
人之所為，總有限度。
16. I'm writing to tell you that I was admitted by Harvard University.
我寫信告訴你我被哈佛大學錄取了。
還能這樣說：
I'm writing to you that I have got the admission letter of Harvard University.
I am telling you that I have passed the exam of Harvard University.
17. The girl wrote the letter with a pencil.
那個女孩用鉛筆寫信。
還能這樣說：
The girl used a pencil to write the letter.
The girl wrote the letter in pencil.
諺語：
Wine and judgement mature with age.
酒老味醇，人老識深。