be absent from 缺席 be annoyed at 对……恼怒 be in charge of 负责 be available to sb. 可被某人利用或得到 at one’s expense 由某人支付费用 be concerned about 对……担心 attr...
2. be about to do sth… when 正要做某事……突然…… eg. I was about to go shopping when it suddenly began to rain. /我刚要出去买东西,天就突然下雨了。 3. by accident / by chance / accidentally 偶然地 4. come across sb 偶然遇见 5. act on sth 依……行...
更多内容请点击：四级备考:固定搭配总结 推荐文章