用法总结 Present continuous vs present simple 现在进行时和一般现在时 1. To talk about something that you are doing right now, use the present continuous tense. 描述 正在进行的动作，用 现在进行时。 I 'm drinking coffee. You 're ...

Check and improve your grammar with our basic grammar reference guide. On this page you'll find links to our basic grammar summary pages. Each basic grammar reference page covers a key grammar point ...

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