Unit 4 I used to be afraid of the dark 知识点讲解 常见的time短语有: what time 几点 at times不时,有时 at the same time 同时 from time to time 时常; 有时,和 sometimes, at times 是同义表达。 for the first time 第一次 all the time 一直,总是; in time 及时; on time按时,准时 have a good/great/wonderful time 玩得开心 3」t ' s bee n three years si nee we last saw our primary school classmates. It has been+一段时间+since+含有过去式的陈述句 自…以来已经多长时间了 ” .我在这里工作已经有一个半月了。 单项选择 1、 I'm looking after Tom today. He 's been in my house 8:00 this morning. A. at nee 2、 Shared bikes, which are environmentally friendly, quite popular among big cities in China since last April. A. became become become 3、 ---Where is Jane? ---1 don 'tk no w. I her si nee yesterday morni ng. A. haven'tseen 'tsee 'see 4、 Si nee we bega n to use the Intern et, our lives a lot. A. cha nge cha nged cha nge cha nged I used to see him reading in the library every day. see sb. do sth .看见某人做了某事 指整个过程即:指动作经常发生或刚刚完成。 see sb. doing sth .看见某人正在做某事。指当时正在进行的动作。 及时精炼 When I came into the school , I saw some boys basketball on the playgro und . play A. play ng ---My watch doesn 'work. Could you mend it, please? --Sorry. But the workers in that watch shop may be . nd ndly C. nice 类似用法的单词还有 :hear sb. do sth. / hear sb. doing sth .watch sb. do sth . / watch sb