BBC

语法：英语中的叙事时态

小测验 — 英语真实条件句 Episode 190621 / 21 Jun 2019 What’s the difference between the zero and first conditionals?
BBC

小测验 — 包含 stand 和 give 的动词短语

小测验 — 英语真实条件句 Episode 190621 / 21 Jun 2019 What’s the difference between the zero and first conditionals?