2．send out发出(光亮等)

　 The sun sends out light and heat．

1．send for派人去请

The police were sent for as soon as the accident took place．

6．answer for对……负责

You will have to answer for your behaviour one day

5．ask sb．to do sth．要某人做某事

　 ask sb．for sth．向某人要某物

4．ask for要；请求

　 He often asks his parents for money．

3．hear of听说

　 I don’t know him．but I have heard of him．

　 hear from接到某人的书信

　 I haven’t heard from him for nearly a year．

2．speak of／speak about大胆讲话；大声说出来

　He dared to speak about his opinion at the meeting．

1．talk to／with sb．和某人谈话

　The woman I talked to just now is in charge of the office．

8．die out灭绝

　 This kind of bird is dying out．

7．die of死于……(内因)

　 die from死于……(外因)

　 The old man died of old age．

　 Many old people died from air pollution in winter．