I like playing basketball.我喜欢打篮球。
I like to play basketball.我现在想去打篮球。
3．He found it very difficult to get to sleep and he was very unhappy.他发现难以入睡，很不高兴。
句中的it是形式上的宾语，而真正的宾语是动词不定式短语to get to sleep。It作形式宾语时，句子结构往往是：主语+谓语+it+宾语补足语+真正宾语。除动词不定式以外，that 引导的从句也常作真正宾语。这时，句中谓语动词往往是find, think, make, believe等。例如：
Do you think it right to play tricks on others?你觉得开别人的玩笑好吗？
He thought it best to say nothing.他觉得最好是什么也不说。
I make it a rule that I should spend at least two hours learning English every day。每天至少花两小时学英语是我的规律。
get to sleep 是“入睡”的意思。动词get有“渐渐”的含义。例如：
We got to know each other later.后来我们逐渐相互了解了。
When winter comes,the nights are getting longer and the days are getting shorter.冬天来临，夜晚变长，白天变短。
4．With a smile the man from downstairs said,“I′m sorry to trouble you, comrade.”楼下的人微笑着说：“对不起，同志，打扰一下。”
九年级英语第四单元What were they doing?由www.yf1234.com收集及整理,转载请说明出处www.yf1234.com
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句中with a smile是介词短语，在句子里用作状语，表明楼下的人说话时的伴随状态。介词短语用作状语的情况很多，再如：
Thank you for teaching us so well.谢谢您把我们教得这样好。
Classes begin at eight.八点开始上课。
5．He was just falling asleep when there was a loud knock at the door.他刚睡着，就有人大声敲门。
fall asleep是“睡着”的意思。asleep是形容词，接在连系动词fall之后。句中when等于and then，意思是：那时。再如：He was walking in the park when he saw a watch on the ground.他正在公园里行走，看见地上有一块手表。
第十五课 Lesson Fifteen
一、 教学内容
1．词汇（略）
2．语法：继续学习过去进行时态。
二、 教具
录音机。
三、 课堂教学设计
1．复习 值日生报告。检查学生复述课文。
2．打开书，学生两人一组，就课文第1部分内容，进行对话练习。请几组同学表演对话，并将对话形式扩展如下：
S1：What were you doing last night?
S2: I was watching TV.
S1:(面向全班)What was he/she doing alst night?
S2:He/She was watching TV.
教师也可采用以下形式：
Chain practice(连锁式练习)由学生甲向学生乙提问，乙回答后，再向学生丙提问。后面的学生在回答问题时，不能重复已答过的内容。例如：
S1:What were you doing at five yesterday afternoon?
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九年级英语第四单元What were they doing?