Protasis
n. 条件从句, 序诗
🗣️ 情景例句
She is busy now.
她正忙着呢。
The rotten apple injuries its neighbours.
一只死老鼠，弄赃粥一锅。
From those humble beginnings, we have seen the development of the user-friendly home computers and multimedia machines which are in common use today.
从那些简陋的初级阶段，我们看到了现在都已普及的、使用简便的家用电脑和多媒体的微机的发展。