float n. 漂流物；浮萍 v. 浮动，漂浮
[特征]
- clouds float in the sky.
云漂浮在空中。
- the boat floated down the river.
小船沿河漂流。
[贴心叮咛]
float的基本意思是“漂浮”，如白云在天空“漂浮”，浮萍“漂浮”在水面等，都用float。
[练习与解答]
- fortunately him, he grasped a big piece of wood, and the water him to the bank of the river. [2004 河南]
a. for; floated b. to; flowed c. for; flew d. to; floated
答案：a
（幸运的是，他抓住了一根大木头，水使他浮岛了河岸。第一个空构成的是副词作状语的常用借此搭配，表示“对某人来说……”；第二个空中，b选项表示水等流淌；c选项的flew是fly的过去式，容易和flow的过去式flowed混淆。）
follow adj. 跟随，接着
[特征]
follow这个单词在英文中使用非常普遍，它最大的特点就是后面直接跟名词或代词，不用加任何介词。
- follow me!
跟我来。
- spring follows winter.
冬去春来。
- if you follow my advice, you will pass the exam.
如果你听从我的建议，你会通过考试的。
[备考必背]
①重要词组
follow on 继续 follow out 做到底，追究 as follows 如下
- the results are as follows.
结果如下。
②派生词
following adj. 接着的，以下的
the following sentences 下列句子
- the following day, i went to see the doctor.
第二天，我就去看病了。
[练习与解答]
- when you talk, you have to at least make yourself .
a. follow b. followed c. following d. being followed
答案：b
（当你说话的时候，你必须起码让别人听懂你所说的话。此处要填的是过去分词，作宾语补足语，表示“让别人听明白”。）
force n. ①武力，暴力 ②军队 vt. 强制，强迫
[特征]
- the thief took the money from the old man by force.
小偷用暴力夺走了这位老人的钱。
- my brother joined the air force last year.
我哥哥去年参加了空军。
- don't force me to do such a thing.
不要强迫我去干这种事。
[备考必背]
①重要词组
by force 用武力 force sb. to do sth. 强迫某人做某事
- the robber force the old man to hand over the money.
强盗逼那个老人把钱交出来。
②辨析forces，army和troops
forces的意思是“兵力”，指武装部队；army尤其指陆军；troops则尤其指骑兵或装甲部队。
forehead n. 前额
[特征]
- everyone's faults are not written on their foreheads.
每个人的过错并没有写在额头上。
[贴心叮咛]
forehead是一个复合词：fore（前面的）+head（头）。