2301
what if
（what shall we do if）
如果……将会怎样
What if you should fail?
What if the plan doesn't work out?
What if we won the prize.
2302
pull up
（使）停下
The driver pulled up at the traffic lights.
He pulled up the car at the station.
The boat pulled up alongside（并排地） the ship.
2303
optional
adj.可选择的、选修的
The insurance cover is optional.
I need to choose from 3 optional ways.
optional course（选修课）
2304
adopt
vt.采用、采纳、通过、批准、收养
adopt a suggestion
adopt a new teaching method
adopt a resolution adopt a child
2305
oxygen
n.氧、氧气
People need oxygen to breathe.
Water contains hydrogen and oxygen.
oxygen mask
2306
dioxide
n.二氧化物
breathe out carbon dioxide
carbon dioxide bottle
2307
France
n.法国
The live in France.
Franch is far away from China.
a day trip to Franch
2308
French
adj.法国的、法国人的、法语的
n.法国人、法语
Paris is a French city.
French wine is of good quality.
Can you speak French?
2309
fall for
对……倾心、迷恋、对……信以为真
She fell for him at first sight.
He fell for tennis as a child.
Many people fell for his tricks. I don't fall for such nonsense.
2310
see about
安排、进一步考虑
I'll see about buying the tickets. We'll see about your proposal.
see about all kind of things
see about the lunch
2311
disagree with
与……意见不同
I disagree with you on this point.
She disagreed with the decision.
I strongly disagree with his views.
2312
shoot
v.射击、疾驰、射门、投篮、拍摄
n.幼苗、嫩芽、拍摄摄影
The hunter shot the rabbit with gun.
The kids are shooting arrows at a target.
shoot at the basket
2313
shot
n.射、开枪、射门、击球、投篮、照片或电影的连续镜头
The hunter fired shots at the bird. Both shots missed.
one shot at goal
He scored（n.v.得分、刻痕） with a shot into the net.
2314
drop off
（让……）下车 把……放下、下降、减少、睡着
Interest in the book dropped off. The sales of apple dropped off.
Drop me on the conner. Pleast drop me off at the band.
I dropped off during the class.
2315
mess up
把……弄糟、把……弄乱或弄脏
mess up the situation
mess up our lives mess up the room
mess up my hair
2316
dusk
n.黄昏、薄暮
Dusk sets early in winter.
work from dawn to dusk
disappear into the dusk
2317
dust
n.尘土、灰尘、粉末
vt.擦净、除尘、撒粉末等
The air was thick with dust.
Dust cloud of dust on the furniture. a cloud of dust
dust the wooden floor
2318
dusty
adj.尘土多的、尘土般的
write on the dusty window
2319
arise from
由……引起、起因于
Accidents arise from drinking alcohol.
arise from economic reform
arise from lack of communication
2320
cut out
切去、删去、戒除、停止服用
cut out the unimportant details
cut out the last paragraph in the article
He decided to cut out smoking. cut out the waste
学习英语，词汇量是贯穿始终的主题。语法再精通，词汇量匮乏一样是不行的。平时要大量阅读英语读物，每年词汇量输入不少于20万单词。要从听、说、读、写的顺序，从四个方面入手，逐步提升。