每日英语,每天学习一点点(三)
知识点1:practice 作及物动词,意为"训练",后接名词、代词作宾语。
当 practice 后接动词作宾语时,要用 v - ing 形式。如:
My son has to practice the guitar every day .我儿子必须每天练习吉他。
Zhang Yu practices driving after work these days .张宇这段时间下班后练习开车。
知识点2: keep on doing sth .
keep on doing sth .意为"继续做某事",表示经过一段时间间隔后"继续做同一件事",中间有明显的停顿。如:
Lucy kept on asking questions in class .露西在课堂上不断地问问题。
【辨析】 keep doing sth .表示"一直或不断地做某事",强调某个动作连续不断地进行,中间没有停顿。如:
He kept standing during the meeting .开会时他一直站着。
知识点3: try one s best
try one ' s best 意为"尽某人最大的努力",其后常接带 to 的动词不定式,即 try one ' s best to do sth .,表示"尽某人最大的努力去做某事"。如:
You should try your best to finish the work today .今天你应该尽力完成这项工作。
知识点4: want sb . to do sth .
Jim wants you to come here at 3 o ' clock .吉姆想要你三点钟来到这里。
知识点5:sure
sure 意为"确信;肯定;有把握",常用结构有:
◆ be sure of / about sth .表示"对某事有把握"。如:
I ' m sure of / about Linda ' s phone number .我确信是琳达的电话号码。
◆ be sure to do sth .表示"务必做某事,一定做某事"。如:
Be sure to arrive on time tomorrow .明天一定要准时到达。
" be sure + that 从句"表示"肯定:确信"。如: Helen is sure that she can pass the exam .
海伦确信她能通过考试。
make sure 表示"确保;查明",其后可接 of sth .,动词不定式或 that 从句。如:
- Did you lock the door ?
- I think so , but I ' d better make sure of it .
--﹣你锁门了吗?
--﹣我想是吧,但我最好确定一下。
Make sure to close the door when you leave .当你离开的时候一定要关上门。
She looked around to make sure that she was alone .
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