.第三章英语常用句型大全第一节 不定式结构1. ask sb to do sth叫某人去做某事2. ask sb not to do sth叫某人不要去做某事3.be afraid to do sth恐惧，害怕做某事4.be ashamed to do sth羞于做某事5. be friendly to sb对某人好6. be glad to do sth高兴，乐意做某事7.be happy to do sth高兴，快乐做某事8.be helpful to sb对某人有好处9.be sorry to do sth对做某事而感到对不起10.be supposed to do sth被要求去做什么11.be terrified to do sth害怕做某事12.be(feel) afraid to do sth害怕做某事13. begin to do sth = start to do sth开始做某事14. bother sb to do sth打扰某人做某事15.take sb to s
