5.agree to do sth 同意做某事 6.help sb (to) do sth 帮助某人做某事 7.want to do sth 想要做某事 8.tell sb to do sth 告诉某人做某事 9.have problems(in) doing sth 做某事有困难 10.use sth to do sth用某物去做某事 11.be/get used to doing sth 习惯于做某事 ...