1，How 如何（方式）
how long 多长（时间）答语常用“（For/ about +）时间段”
how far多远（距离）答语常用“（It’s +）数词 +miles/ meters/ kilometers”
how often多久一次（频率）答语常用“Always/ often/ every day/…”或 “次数+时间”等表频率的状语
How soon多快，多久以后，常用在将来时中。答语常用“in +时间段”
how many多少（接可数名词） how much（接不可数名词）
2，exercise作v 锻炼，运动
作[c] 操，练习 do morning/ eye exercises
作[uc] 锻炼 take much/ more exercise
3，at+钟点 at 7 o’clock at noon/ at night（during/ in the day） at this/ that time at the age of
on+ 具体某天、星期、特指的一天、纪念日、节日
on April 1st on Sunday on a cold winter morning on Teachers’ Day
in +上午、下午、晚上、年、月、季节、年代、世纪 in the morning/ afternoon/ evening in 1999 in August in autumn in 1960s in the 21st century
4，help sb （to）do sth
help sb with sth
with sb’s help= with the help of sb
5，do（the）housework= do chores
6，频度副词（行前be 后）
Always usually often sometimes seldom hardly never
7，sometimes 有时（频度副词） sometime（将来）有朝一日，（曾经）某天
Some times 几次，几倍 some time 一段时间（前面用介词for）
8，go shopping= do some shopping
9，once twice three times
10，at once，right now，right away， in a minute，in a moment，in no time 立刻，马上
once more再一次，重新 once upon a time 从前，曾经
11，every day 每天 everyday日常的，每天的
12，on the internet
13，what’s your favorite program？=what program do you like best？
14，free 空闲的 in one’s free time be free
自由的 as free as a fish freedom n.自由
免费的 The best things in life are free.
15，be full =be busy忙的 be busy doing sth/ be busy with sth
be full of充满 eg：The bottle is full of milk.
16，How come？怎么会？为什么？
17，may be 为情态动词+动词原形，在句子中做谓语，maybe是副词，表示可能，大概，一般放在句首(perhaps)。
18，stay up doing sth熬夜做某事
19，stay/ keep healthy be in good/ bad/ poor health be good/ bad for one’s health
20，at least=no less than at most=no more than
21，ask sb about sth ask sb（not）to do sth ask sb for help/ advice/ information
22，the result of…的结果 as a result 结果
23，be surprised that/ be surprised at/ be surprised to do 对…很惊讶
To one’s surprise另某人惊讶的是 in surprise惊讶地
24，the answer to the question，a key to the door，a ticket to the ball game
25，although=though（与but不能连用）
Even though/ if即使，尽管 as though/ if仿佛，好像
26，by介词+n/ v-ing/ 代词 通过…方式
by oneself独自地 by the way顺便问/说一下 by chance/ accident偶然地
by mistake错误地 learn by heart记住
27，the best way/ time to do 做某事最好的方式/时间
28，4个花费：人+spend/ spends/ spent+时间/钱+（in）doing sth/ on sth spend time with sb
人+pay/ pays/ paid +钱+for sth
It takes/ took sb +时间+to do sth
物+cost/ costs/ cost +sb +钱
29，die v.死亡，消失 died过去式
dead adj死亡的，无生命的 dead dog have/ has been dead for…=died…ago
dying adj垂死的，快死的
death n 死亡 the death of…
30，before it’s too late趁来得及
31，“数字+percent of+ n”作主语，谓语动词取决于n
Eg：Twenty percent of the students exercise every day.
Twenty percent of time passes.
32，no one =nobody指人，回答who，anyone，anybody的提问
None指人或物，可接of 短语，（→all ≥3）回答how many/ much，any，及有特定范围（which）的提问
nothing指物，回答what，anything的提问