One of the responsibilities of the Coast Guard is to make sure that all ships dutifully followtraffic rules in busy harbors.
译文：海岸警卫队的职责之一是：确保所有船只在繁忙的港口严格遵守进出港规则。
点睛：句子的主语为one，而非responsibilities或Coast Guard.因此系动词用is。that引导的是makesure的宾语从句，其中dutifully为follow的状语，意为“尽职地”。
发表于 2016-8-9 08:14:10