augment /ɔ:g’ment/
to increase the size or value of something by adding something to it
v增加；增大;补充，增补：

例句
His salary is augmented by a small inheritance.
一小笔遗产增加了他的收入。
The king’s power has augmented.
国王的权力扩大了。

His small salary is augmented by a commission.
佣金补充了他的微薄的薪水。

august[ɔ:'ɡʌst]
having great importance and especially of the highest social class
impressive, making you feel respect
adj. 威严的；令人敬畏的
August['ɔ:ɡəst]
n.8 月[略作Aug.,Ag.]

奥古斯都 原名盖乌斯·屋大维(Gaius Julius Caesar Octavianus)。公元前44年被凯撒收为养子并指定为继承人。凯撒被刺后登上政治舞台。 罗马帝国的开国君主，统治罗马长达43年。元首政制创始者。凯撒的甥孙。元老院赐封为奥古斯都。

例句
There's an august group of statesmen in the auditorium.
大礼堂里坐着一群德高望重的政治家

aug-词根：增大，提高
auction ['ɔ:kʃən]
a public event at which things are sold to the person who offers the most money for them
vt. 拍卖；竞卖
n. 拍卖

词组短语
拍卖掉，通过拍卖处理掉(off):
It was sad to see all grandfather’s lovely things being auctioned off.
看到祖父所有心爱之物在拍卖是令人伤心的

vocation[vəu'keiʃən]
a type of work or way of life that you believe is especially suitable for you
n. 职业；天职；天命；神召

convoke[kən'vəuk]
convoke somebody/something (formal)
to gather together a group of people for a formal meeting
vt. 召集；召集…开会

例句
The king convoke parliament to cope with the impending danger.
国王召开国会以应付迫近眉睫的危险。

convocation [,kɔnvəu'keiʃən]
a large formal meeting, especially of church officials or of (previous) members of some British colleges
the act of arranging a convocation
n. 召集；集会；教士会议；评议会

TEM-4
If someone is a witness, then he has to ____ in court.

A.augment
B.testify
C.certify
D.betray

B.testify
本题解析：
【句意】如果某人是证人，那么他必须出庭作证。【难点】testify意为“作证，证明”；augment意为“扩大；增大；加强”；certify意为“证明，证实”；betray意为“出卖；失信于”。