Word: 妹妹 These are the Chinese grammar articles about 妹妹, whether they focus on it or mention it. Example sentences using 妹妹 2 sentences, showing page 1 of 1. 我帮我妹妹做作业。 Wǒ bāng wǒ mèimei zuò zuòyè. I help my little sister do her homework. 我有一个妹妹。 Wǒ yǒu yí gè mèimei. I have a younger sister.