1.It is my great pleasure to hear from you (万能回信开头句)
2. 表建议句型
It is highly suggested that you should(not)…
In addition, you are supposed to do sth
Meanwhile,…is also a good way for you.
3.高级词汇的顺序词
to begin with,可替换 at first,
then ext, 可替换 second,
finally, 可替换 third,
4. 可被替换的连词
however, 可替换 but
therefore 可替换 so
otherwise 可替换 or