my son asked me to come help at his school track meet but I felt like a fifth wheel when I got there : they already had enough people to help so I just stood there feeling useless .我的儿子要我在他学校开运动会的时候去帮忙。可是,我到了那里觉得自己似乎是多余的,因为他们已经有好多人在帮忙,我只好站在那里没事干。
+is useless
1 . 是没有用
it is useless trying to argue with shylock ., 试图跟夏洛克讲道理是没有用的.