初二知识点
1、help sb. with sth. 在某方面帮助别人 help sb. (to )do sth.帮助某人做某事
with one's help=with the help of sb.在某人的帮助 help oneself to sth.请自用食物
2、watch sb. do sth. 看到某人做了某事，（现在没有做，做过）
watch sb. doing sth.看到某人正在做某事（正在做）see, hear类似
3、remember to do sth.想起记得要做某事，未做事 remember doing sth.相起记得做过某事
4、forget to do sth. 忘记要做某事 forget doing sth.忘记做过某事
5、enjoy oneself=have a good time=have a great time=have fun, 玩得愉快
6、lots of =a lot of =many(可数)\much(不可数)许多
7、spend :
sb. spend some time on sth.某人花费时间做某事 Cost: sth. cost sb. some money 某物花去某人钱 pay: sb. pay some money for sth. 某人支付钱
Take: It takes (took) sb. some time to do sth.做某事花去某人时间
8、ask for 请求，要求, ask sb. for sth.向某人要某物
ask sb. to do sth.要求某人做某事
9、enjoy doing sth喜欢做某事.finish,practise, mind, miss ,consider,keep, continue,这些词语后跟动名词形式V-ing
10、invite sb.to do sth. 邀请某人做某事
11、find+ it+ adj+to do sth.发现做某事怎么样
12、try to do sth.尽力做事 try doing sth. 尝试做某事
try not to do sth .尽力不做某事 try one's best尽某人最大的努力,