v. 用来表示某人或某物即主语本身,用来表示某人或某物属于某一群体或有某种性质( be的过去式 );在,存在;不受干扰
网络 是; 华盛顿(Washington); 中指的是(Windows Activation Service)
Cooper was a good mixer, he was popular.
库珀是个善交际的人,很受欢迎。
She was widowed when she was 35.
她35岁时就守了寡。
It was summer and school was out.
夏天,学校放假了。
The room I was given was a hovel.
分给我的房间又脏又小。
I was aware that she was trembling.
我察觉到她在发抖。