UNIT ONE less than free time in the future hundreds of go skating space station come true in the past
be able to do housework
一般将来时（will/shall+do)
表示在将来时间内所做的动作或所处的状态,常用的时间状语为tomorrow next week in 10 years,等等
be going to +动词原词,be 随人称的变化而变化
一般疑问句及简略回答
比较级more ,less,fewer的应用
UNIT two
keep out what's wrong?/the matter?/the problem with..
out of style call sb up on the phone pay for part-time
the same as get on as much as possible all kinds of
on the one hand / on the other hand
情态动词should could 的用法 should 意为“应该”,表示一种义务,责任或建议,它本身无人称变化,且后接动词原形 could 为can 的过去式,可用来表示过去的能力或语气的委婉性,无人称变化,后面接动词原形
why don't you...
表示“为什么不..“
相当于Why not do..用来向别人提出建议,本身为否定句,但表达的是肯定意义,相当于汉语中的反问句
UNIT THREE
barber shop take off come in take place get out run away hear about as ...as
WHEN/WHILE 引导的时间状语从句
时间状语从句为复合句中的一种,该句型中常用的引导词有after before when while as not ..until 等,它们所引导的从句常用来说明主句中的动作所发生的时间
过去进行时
（1）过去进行时用来表示某人/物在过去某时或某段时间内正在做某事
（2）其结构为：陈述句：主语+was/were+v.ing(肯定）
主语+was/were+not+v.ing (否定）
一般疑问句：Was /Were +主语+v.ing?
特殊疑问句：特殊疑问词+was/were+主语+v.ing?
