Word: 大忙 (dàmáng) Example sentences using 大忙 2 sentences, showing page 1 of 1. 警察帮了我们一个大忙。 Jǐngchá bāngle wǒmen yí gè dàmáng. The police helped us a lot. 证人的证词帮了大忙。 Zhèngrén de zhèngcí bāngle dàmáng. The witness's testimony helped a great deal.