1、both意思是两者、双方, both...and...意思是既...又...、...和...。
2、例句:
(1)Both Helen’s parents are doctors.海伦的父母都是医生。
(2)She can both speak and write Japanese.她会用日语说和写。
(3)Both of her parents went to college.她父母都上过大学。
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