Grandma is making a phone call. (奶奶正在打电话。)Grandma is on the phone. (奶奶在通话中。)Grandma is talking on the phone. (奶奶正在电话中交谈。)Grandma is having a phone conversation. (奶奶正在通话。)如果您想表示“奶奶正在接电话”,可以用以下英语表达方式:Grandma is answering the phone. (奶奶正在接电话。)Grandma is picking up the phone. (奶奶正在接听电话。)