1、vote，强调过程，不及物；elect，强调选举结果，及物动词。
2、make reference to 参考
3、suggest 接动名词和that从句，不能接不定式。
【语法用法】advise有时指“劝人采用……”， I will not advise such a course of se against指“劝人不采用……”， I advise against such a course of se后可接动名词形式，但不可直接加不定式，如可说He advises trying once more，但不可说He advises to try once more； 意为“劝某人。。。”时，advise接指人的词后可加不定式。 He advised her to read carefully.4、spend time 后的.用途是表示动作的名词用In，非动作的名词用on.
We spent many hours in a pleasant conversation.
He doesn't spend much time on his homework.
5、worth 表强调时，前加well，不加very。The film is well worth seeing.