爱华网1)加入某党派、某组织或某社会团体，用join，不可用join in。如：
①He will never forget the day when he joined the Party.
他永远也忘不了他入党的那一天。
②His brother joined the army three years ago.
他哥哥是三年前参军的。
join还可解释为“连接”。如：
①The railway joined the two cities.
铁路把两个城市连接起来了。
②The two clauses are joined by a conjunction.
两个分句由一个连词连接起来。
2)说参加某种活动用join in，如说“与其人一起做某事”，则用join sb. in sth. / doing sth.。如：
①May I join in the game? 我可以参加这个游戏吗？
②Come and join us in the discussion. 来和我们一起讨论吧！
③We are having supper now.Would you like to join us?
我们正在吃晚饭，你也来和我们一起吃好吗？
join in多指参加小规模的活动如“球赛、游戏”等，常用于日常口语。如：
①Come along, and join in the ball game. 快，来参加球赛。
②Why didn't you join in the talk last night? 昨晚你为什么没参加座谈？
3)take part in参加(群众性活动、会议等)，往往指参加者持积极态度．起一份作用。如：
①A great number of students took part in May 4 Movement.
大批学生参加了五四运动。
②We are going to have an English evening. Do you want to takepart?
我们准备举办一个英语晚会，你想参加吗？
③How many of you are going to take part?
你们多少人准备参加？
④All the students took an active part in the thoroughcleaning.
所有的学生都积极参加了大扫除。
【注意】take part in是惯用词组，part前一般不用冠词，但part前有形容词修饰时，要用不定冠词。如：
Lincoln took an active part in polities and was strongly againstslavery.
林肯积极参加政治活动，强烈反对奴隶制。
enjoy--get pleasure from;take delight in.
“享受...之乐趣；乐于”。例如：
I've enjoyed talking to you about old times.
我很高兴曾经和你叙旧。
like(vt.vi.)--be fond of;have a taste for;
find satisfactory or agreeable.“喜欢；喜爱；爱好”
例如：Do you like fish?你喜欢鱼吗？
I like to read in bed but I don't like having
meals in bed.
我喜欢躺在床上看书，但我不喜欢在床上吃饭。
at the end of“在……末端（尽头）；在……末（底）”可表示时间，也可表示地点。后面可以跟名词或相当于名词的词。在句中作时间状语，可以放在句子开头，也可以放在句子末尾。
例如：There is a post office at the end of the road.
在路的尽头有一家邮局。
At the end of last week,we had a class meeting.
到上个星期末，我们开了一次班会。
at last=in the end=finally“最后；终于”，后面不接任何单词，在句中作时间状语，一般放在句子开头。
例如：At last/Finally,they won the football match.
他们终于赢了这场足球比赛。
We walked three hours.At last/In the end,we got to the park.
我们走了三个小时。最后我们终于到达了公园。
