英语复习知识点概要have on和hear总结
have on,have…on
have on 表示“穿着，戴着”，有have on sth.或have sth.,on结构，强调状态，无进行时，但有动词—ing短语形式。have…on表示“有事，有约（会）”。对比：
On Children’s Day,children always have on their new clothes. 儿童节那天孩子们总是穿着新衣服。
I’ve nothing on tomorrow.Let’s go together. 明天我没事，咱们一起去吧。
误：In fact the king was having nothing on.
正：In fact the king had nothing on.事实上国王什么也没穿。
正：The king having nothing on walked in the front.一丝不挂的国王走在最前面。
[应用]汉译英
①He has something on this evening.I’ve to go without him.
②He has his uniform on this evening.
have something(nothing,much,little)to do with与……有（没有，有很大，有一点）关系。
①I have nothing to do with that young man.②His job has something to do with telephones.
③This has little to do with what we are talking about.
④Do you have anything to do with that club?
He sends his regards/best wishes/love to you. 带人问好时
也可用：Please remember me to your parents.
have/find + difficulty/trouble + (in)doing sth ./ with sth.
There be + difficulty/trouble + (in) doing sth./with sth.做某事有困难/麻烦；在……方面有困难/麻烦。
其中的difficulty和trouble为不可数名词；doing前的介词in 可省略。
①I have some difficulty(in)pronouncing some English words.有些英语单词我发音有困难。
②Everyone in the town knew him; so we had no difficulty(in) finding his house。镇上所有的人都认识他，所有我们毫不费力就找到了他的家。
③The boy had little difficulty with maths.这孩子学数学没困难。
④There was much difficulty (in) finding him.好不容易才找到他。
have mercy on/upon sb.
该短语意为“宽恕（或可怜）某人”，类似的词组还有show mercy to sb.。
He always has mercy on the poor.
at the mercy of …任由……摆布，在……的掌握中。
如：They were lost at sea,at the mercy of the winds and the waves.
hear vt,;vi.
（1）听见、听到（声音）。
①Listen!I heard somebody knocking at the door.听！我听到有人敲门。
②Old Granny can’t hear very well.老奶奶听觉不好了。
(2)hear that(宾从)听说某事
①I heard that he had come back.我听说他回来了。
②I heard that we were going to Qingdao for a holiday.Is that true?听说我们要去青岛度假，是真的吗？
（3）hear of 听说；获悉。
①I have heard of him,though I don’t know him.尽管我不认识他，但我听说过他。
②They have never heard of American country music.他们从没听说过美国的乡村音乐。
③They have never heard American country music。他们从没听过美国的乡村音乐。
（4）hear from sb.收到某人的来信。
—Have you heard from Peter recently?最近收到彼得的信了吗？
—No,I haven’t heard from him for three months.没有。我已3个月没收到他的信了。
