n.凸邊;溝
the woman is going to buy it. the man is going to write. the girl is going to eat the food. i am going to chimb the leader. i am wrinting. he is eating. 用肯定特征和否定特征分別描述六個人要做什么,以及他們正在做什么: 一個女人、一個男人、一個女孩、一個男孩、你和我。例如:那個男人要買一輛轎車。那個女人正在買花。