Section B
1. A UFO flew over my head while I was walking toward the bus stop yesterday.
(1) fly over 飞跃，over表“在物体的正上方”，如：There is a bridge over the river.
(2) walk toward(s) 朝…方向走去
(3) while ①当„时侯②与此同时；表此两种意思时，可与when退换，常与经行时态搭配使用：He is watching TV
while/ when I am doing my homework.
While 还可表“然而”，如：He likes Beijing while I like Chongqing.
2. There are no living things on other planets.
living things生物
3. Will robots make humans lose their jobs.
lose one’s job 失业；find a job 找工作；get a job 得到一份工作
4. People often mistake some man-made objects for UFOs.
(1) mistake A for B 错把A当做B：He often mistakes me for Jim.
(2) make a mistake/ make some mistakes 犯错 He made a mistake in an exam.
(3) by mistake 错误地 He called me Jim by mistake
5. While he was trying to call for help….
call for ①=ask for 要求：He called for help.
②提倡，号召：Public call for green Olympics. 公众呼吁绿色奥运。
6. He woke up and saw his mother.
(1) wake up 醒来 She woke up at 9:00 this morning.
(2) wake sb up 弄醒某人 My mother wakes me up at 6:00 every morning.
(3) be awake 醒着的 I was awake all night.
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