慢速英语:Using the Right Article

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1. decide vt.决定; 决心
例句：If you decide to ride a horse, and will memorize that takes the feed for the horse.
如果你决定骑马去，要记得给马带饲料。

2. explore vi. 勘查， 探测
例句：We must explore all possible ways to increase food production.
我们必须探究增加食物生产的一切可能的途径。

3. definite adj.明确的; 一定的; 肯定
例句：A junction has no definite direction in space.
接头在空间中没有一定方向。

4. demonstrate vt.论证; 证明，证实
例句：He was asked to demonstrate his talent to Japan.
他应邀去日本献艺。

5. illustrate vt.说明; 表明; 给…加插图
例句：A simple example will serve to illustrate the point.
一个简单的例子可以说明这一点。

6. challenge vt.质疑; 向…挑战
例句：I'll challenge him right now!
我马上问他！