考生在备考各种语言考试时，需掌握的5000个基本词汇及相关词组是考试成功的关键。除了理解这些基本词汇的基本含义外，考生还应深入分析并掌握词汇之间的词义关系，如近义词、同义词、反义词等。以下是十组在基本词汇中必须掌握的近义词：
1. Dip refers to a partial, temporary, or light placing into a liquid, often suggesting a cautious or tentative action.
用法举例：She dipped her spoon into the tea.她把匙子放进茶里。
2. Duck implies submerging the head into water or playingfully pushing someone's head underwater when swimming.
用法举例：He ducked under the water again.他又潜入水中。
3. Plunge suggests a rapid and forceful action, but not necessarily deep immersion.
用法举例：He survived a 75-foot plunge onto concrete.他从75英尺高的地方跳到混凝土地面上，竟然活了下来。
4. Submerge refers to a complete immersion into a liquid, especially for prolonged periods or in deep layers.
用法举例：Hippos are unable to submerge in the few remaining water holes.在仅剩的几个水坑里，河马根本无法沉入水中。
以下是其他的近义词组及其解释和用法举例：
5. Shorts - 指短裤或裤衩。
6. Trousers - 指长裤，常用于较正式场合。
7. Jewel - 指经过切削打磨的贵重宝石，常用于装饰或饰品上。
8. Voyage, Excursion, Expedition, Cruise, Journey, Tour, Travel, Trip - 这一组词都涉及到旅行或游览的概念，但各自侧重点和目的有所不同。
9. Hop, Bound, Skip, Jump, Leap - 这些动词都表示跳跃的动作，但“hop”强调单脚短跳，“bound”多指向前向上或向下跳跃，“skip”指两替轻地跳或跨的动作等。