there是副词.
this these those,是指示代词.this 是单数,these 是this的复数形式,
those 是that 的复数形式,译为 那些
there
副词 ad. 
1.在那里;到那里;向那里
She lives there. 
她住在那里. 
2.在那时;在那点上;在那方面
You've got a point there. 
你这话有道理. 
3.(用以引起注意,加强语气等)瞧,你看
There she is. 
瞧,她来了. 
There comes the bus. 
公共汽车来了. 
4.(与动词be连用)有
There is a dog under the tree. 
树下有一只狗. 
5.(与动词seem, appear连用)好像...,看来...
There seems to be something in what he says. 
他说的话似乎有道理. 
感叹词 int. 
1.(表示满意、得意、鼓励、安慰、挑衅等)你瞧;好啦;喂
There, there. Stop crying. 
好啦,好啦,别哭了. 
名词 n. 
1.那个地方, 
They have moved somewhere near there. 
他们搬到了那地方附近
