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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, thennext, 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 | 
