sit up与sit down相反吗?
母语人士的回答
Rebecca
不,实际上,这两个可以说是相似的意思。站着sits down叫坐下,躺下sits up叫坐起来。 Sit up也用来告诉我们坐在一个更好的位置。对面是stand up 。示例: I was lying down and then sat up quickly when I heard our guests arriving. (听到客人来了,我赶紧躺下坐下。) 例: You can sit down here. You've been standing for a while. (你可以坐在这里。你已经站了很长时间了。)