【句子】
when it is struck, a tuning fork produces an almost pure tone, retaining its pitch over a long period of time.
音叉被敲击时，产生几乎纯质的音调，其音量经久不衰。
解析】 1)n. 罢工，打击，殴打
it was not long before tragedy struck again.
没多久，灾难又再次降临。
2)v. 打，撞，罢工，划燃
the union struck for better work conditions.
工会为争取更好的工作条件而罢工。
3)strike, beat, hit, tap, knock辨析
strike 常表示用力打或敲
hit 有“撞击，袭击”之意，比strike稍弱一些，指一次性的打击或击中
beat 指连续多次的打，也指有节奏的击打，还可表示打败
tap 指轻拍
knock 指敲打并伴有响声，还可表示打倒、撞翻
1)n. 曲调，调子，和谐，协调，数量
he played a tune on the violin.
他用小提琴演奏了一首曲子。
2)vt. 为 ..调音，调整
the orchestra tuned their instruments.
乐队在给乐器调音。
adj. 纯的，纯洁的，纯粹的
water can be made pure by distilling it.
水可以通过蒸馏而提纯。
she is a pure girl.
她是一个纯洁的女孩。
1)n. 语气，音调，调子，色调，风气
that violin has a beautiful tone.
那支小提琴的音色很美。
2)v. 使更健壮，定调，调色，装腔作势地说
exercise tones up the muscles.
运动使肌肉强化。
vt. 保持，保留，记住，聘请
her memory retains everything she reads.
她过目不忘。
n. 一段时间，周期，时期，课时，学时，句号，月经
he was on his feet again after such a long period in hospital.
住院很长一段时间他复原了。
which period of history are you studying?
你正在学哪一段历史？
句子】 although pecans are most plentiful in the southeastern part of the united states, they are found as far north as ohio and illinois.
虽然美洲山河桃树最集中于美国的东南部但是在北至俄亥俄州及伊利诺斯州也能看见它们
解析】 和though的区别，用法
1)两词同义并可换用，但although语气较重，通常放在句首并用于正式场合
i'd quite like to go out, (al)though it is a bit late.
我很想外出，虽然为时稍晚。。
although it was snowing, it was not very cold.
虽然下着雪，但并不很冷。
2)用though 时，可将强调的词前置，但although 不能。as也有此种倒装结构。
poor though / as he is , he is happy.
虽然他穷，但过得很愉快。
child though / as she was, the actress was drawing a crowd.
尽管还是个孩子，这个女演员却引起了人们的注目。（child前无冠词a）
3)although 和 though 用作连词时不能和but连用，但可跟yet, still 等连用。
although he lives alone, yet he is happy.
he lives alone, but he is happy.
他虽然单独生活，但很愉快。
2. as far as
1)“与……一样远”“一直到……”在否定句中也可用 so far as)
we didn’t go as [so] far as the others.
我们走得不如其他人远。
2)“就……而言”“从……来看”“尽……所能”“只要”(有时可用 so far as)
as [so] far as i know, that is highly unlikely.
就我所知，那是极不可能的。
句子】 eliminating problems by transferring the blame to others is often called scape-goating.
用怪罪别人的办法来解决问题通常被称为寻找替罪羊。
解析】1)v. 除去，剔除，忽略，淘汰。
let us eliminate all uncertain on thought.
让我们从思想上消除一切疑惑。
their team was eliminated in the first round.
他们队在第一轮就被淘汰了。
2)remove, eliminate, dismiss, expel简单辨析：
remove: 普通用词，不带任何感**彩。
eliminate: 通常指例行的、有步骤地去掉某物或某人。
dismiss: 既可指突然地迅速地排除，也可指解雇或开除。
expel: 多指强行解除公职或驱出住地。
2. transfer
1)v. 转移，调任，转乘。
he was soon transferred to another post.
他很快被调职。
2)n. 迁移，移动，换车，汇兑。
you can take a no. 21 bus and then transfer to a no. 65 bus at the peace strut stop.
您可以乘21 路公共汽车，然后到和平街站换65 路公共汽车。
的用法 blame做动词时】
1)blame sb. for sth. /doing sth. 为某事责备某人/责备某人做了某事。
he blamed his teachers for his failure.
他把自己的失败归咎于他的老师。
2) blame sth. on sb. 把某事归咎于某人。
the police blamed the traffic accident on jack's careless driving.
警察把那起交通事故归咎于杰克的粗心驾驶。
3) be to blame (for)应(为……)承担责任；该(为……)受责备。[注意]此处不能用被动语态。
the children were not to blame for the accident.
那次事故怪不着孩子们。
blame做名词时】
4)accept/ bear/take the blame for sth. 对某事负责任
you must bear the blame for the accident.
你必须承担造成这次事故的责任。
5) put/lay the blame for sth. on sb. 将某事归咎于某人。
he is trying to lay the blame on me.
他企图把责任推给我。
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