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 ...

We can use the present continuous to talk about the future when we have already arranged to do something. It's definite, not just an idea. Perhaps we have put the arrangement in our diaries. 'Are you ...

Present continuous and 'going to' Verb patterns The present perfect with ‘ever’ and ‘never’ The present perfect with 'for' and 'since' ...