A piece of
辅助 Assistant一块..., 一片...
🧩 词语组成解析
piece
[pi:s]
n. 块，片，段;部分，部件;文章，音乐作品;
vt. 修补;连接，接上;
of
[əv]
prep. 关于;属于…的;由…制成;
aux. 助动词 [非标准用语、方言] =have [主用于虚拟语气];
🗣️ 情景例句
I certainly am. May I help you?
我是，我能帮您什么忙吗？
What's your nationality? Are you an American.
你的国籍是什么？你是美国人？
Had he worked harder, he would have gotten though the exams.
如果他努力了的话，他就会通过考试的。