| 单词 | present tense |
| 释义 | present tense present tense n: (grammar) (语法) SC 一般现在时，现在时态 yì bān xiàn zài shí，xiàn zài shí tài In this lesson, the students learn how to use the present tense. present perfect tense, present perfect n: (grammar: have been, etc.) (语法结构为：have + 过去分词) SC 现在完成时态 xiàn zài wán chéng shí tài In this exercise, students have to decide whether to use the present perfect tense or the past simple tense. |
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