there /ðɛə/ I. adv.1.那里，那边 (［反］here): Father took me there.父亲带我去过那儿。2.在那点上：You are wrong there. 在那点上你错了。There I disagree with you. 在那点上我不同意你。 3.有，存在(通常用来引起句子，其动词一般放在主语前)：There is a pine tree in the garden. 园子里有棵松树。There being nothing else to do, we went home.没有别的事情要做我们就回家了。There appeared to be no one who could answer our requires.似乎没有人能回答我们的询问。Where there is life, there is hope.［谚］ 有生命就有希望。 (留得青山在，不怕没柴烧。)［考句］No one had told Smith about there being a lecture the following day. 无人告诉史密斯第二天有讲座。［考句］There has been a great increase in retail sales hasn’t there? 零售额有了很大的增加，是吗？ 4. 用于习语 here and there 四处，到处：Some birds are flying here and there. 一些鸟四处飞翔。over there 在那里，那边：Who is the man standing over there? 站在那边的那个人是谁? there and then立即（见then条）‖II. interj. 1.瞧，听：There goes the bell.铃响了。There they come!他们来了! 2.好啦(常用于表示抚慰、沮丧、喜悦等): There, there, don’t cry.好啦，好啦，别哭了。There, there, never mind, You’ll soon feel better.好啦，好啦，不要紧，你很快就会好的。
thereafter /ðɛəˈɑ:ftə/ adv. 之后，以后(较文气的说法= after that): On opening day all tickets are a dollar; thereafter they’ll be two dollars. 剪彩那天所有的票都是1美元1张，以后就统统是2美元了。
thereby /ˈðɛəbai/ adv. 因此，从而，由此：He wished to travel and thereby study the customs of other countries. 他希望旅行，由此可以学到其他国家的风俗。He became a citizen, thereby gaining the rights to vote. 他成了公民，因此有了选举权。
therefore /ˈðɛəfɔ:/ adv. 因此，于是：He was very tired, (and) therefore he fell sound asleep. 他累得很，因此睡得很死。He was injured and therefore unable to play.他受伤了，故而无法参加比赛。They therefore can do nothing good of themselves.所以他们靠自己是什么好事也做不成的。
