典型例题
　　---- The light in the office is still on.
　　---- Oh，I forgot___.
　　A. turning it off　 B. turn it off　C. to turn it off　 D. having turned it off
　　答案：C。由the light is still on 可知灯亮着，即关灯的动作没有发生，因此用forget to do sth.而forget doing sth　表示灯已经关上了，而自己忘记了这一事实。此处不符合题意。
　　2.remember to do 记得去做某事　　　　 (未做)
　　remember doing　记得做过某事　　　 (已做)
　　Remember to go to the post office after school.记着放学后去趟邮局。
　　Don't you remember seeing the man before? 你不记得以前见过那个人吗?
　　8) It's for sb.和 It's of sb.
　　1.for sb. 常用于表示事物的特征特点，表示客观形式的形容词，如easy, hard, difficult,　 interesting, impossible等：
　　It's very hard for him to study two languages. 对他来说学两门外语是很难的。
　　2.of sb　的句型一般用表示人物的性格，品德，表示主观感情或态度的形容词，如good, kind, nice, clever, foolish, right。
　　It's very nice of you to help me. 你来帮助我，你真是太好了。
　　3.for 与of 的辨别方法：
　　用介词后面的代词作主语，用介词前边的形容词作表语，造个句子。如果道理上通顺用of，不通则用for。如：
　　You are nice.　(通顺，所以应用of)。
　　He is hard.　(人是困难的，不通，因此应用for。)
　　9) 对两个句子的提问
　　新目标英语在命题中有将对句子划线提问这一题型取消的趋势，现在采取的作法是对一个句子进行自由提问。例如：
　　句子：The boy in blue has three pens.
　　提问：1.Who has three pens?
　　2.Which boy has three pens?
　　3.What does the boy in blue have?
　　4.How many pens does the boy in blue have?很显然，学生多了更多的回答角度，也体现了考试的灵活性。再如：
　　句子：He usually goes to the park with his friends at 8:00 on Sunday.
　　提问：1.Who usually goes to the park with his friends at 8:00 on Sunday?
　　2.Where does he usually go with his friends at 8:00 on Sunday?
　　3.What does he usually do with his friends at 8:00 on Sunday?
　　4.With whom does he usually go to the park at 8:00 on Sunday?
　　5.What time does he usually go to the park with his friends on Sunday?
　　6.When does he usually go to the park with his friends?
　　10) so、such与不定冠词的使用
　　1.so与不定冠词a、an连用，结构为“so+形容词+a/an+名词”。如：He is so funny a boy.
　　Jim has so big a house.
　　2.such与不定冠词a、an连用，结构为“such+a/an+形容词+名词”。如：It is such a nice day.
　　That was such an interesting story.
　　11) 使用-ing分词的几种情况
　　1.在进行时态中。如：He is watching TV in the room.
　　They were dancing at nine o'clock last night.
　　2.在there be结构中。如：There is a boy swimming in the river.
　　3.在have fun/problems结构中。如：We have fun learning English this term.
　　They had problems getting to the top of the mountain.
　　4.在介词后面。如：Thanks for helping me.
　　Are you good at playing basketball.
5.在以下结构中：
　　enjoy doing sth　　　　　　　　　　　乐于做某事
　　finish doing sth　　　　　　　　　　　完成做某事
　　feel like doing sth                 想要做某事
　　stop doing sth                      停止做某事
　　forget doing sth                    忘记做过某事
　　go on doing sth                     继续做某事
　　remember doing sth                  记得做过某事
　　like doing sth                      喜欢做某事
　　keep sb doing sth                   使某人一直做某事
　　find sb doing sth                   发现某人做某事
　　see/hear/watch sb doing sth         看到/听到/观看某人做某事
　　try doing sth                       试图做某事
　　need doing sth                      需要做某事
　　prefer doing sth                    宁愿做某事
　　mind doing sth                      介意做某事
　　practice doing sth                  练习做某事
　　be busy doing sth                   忙于做某事
　　can't help doing sth                禁不住做某事
　　miss doing sth                      错过做某事 12) 英语中的“单数”

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