in the top在顶部的内部 at the top在顶部这个范围之内  on 我要快乐简谱the top在顶部的表面
举个例子吧,有点牵强,不过还能帮助一下理解.
你去爬山,快到山顶的时候,叫at the top of the mountain;
你爬到山顶了,站在最高的点上,叫on the top of the mountain;
你发现石头缝里有一条通道,沿着通道往下走了几步,来到一个溶洞里(这个溶洞还是在山的相对顶部),叫in the tpo of the mountain.
量词：
1、一瓶水 a bottle of water        2、两瓶水two bottles of water
3、一副手套a pair of gloves      4、一副太阳镜a pair of sunglasses
5、一双鞋a pair of shoes          6、两双鞋 two pairs of shoes
7、一包巧克力 a bag of chocolates 8、两副手套 two pairs of gloves 
9、两瓶牛奶two bottles of milk  10、一瓶苹果汁a bottle of apple juice
11、一袋玉米  a packet of corn    12、两袋玉米  two packets of corn
13、一盒橡皮a box of rubbers    14、三盒牛奶  three boxes of milk
15、一杯水a glass of water      16、两杯果汁two glasses of juice
牛津英语4B专项练习(一)
用所给词的适当形式填空。
1.      (that) desks are very dirty.Let’s clean      (they).
2. Can you       (brush) your teeth,Danny?Yes,I       .
3.My sisters      (have) some new      (paint).
4.What      you       (do) now? I       模范人物 (play) football.
5.Their friend       (be) in the playground now.
6.Is this      (you) English book? No,it is      (Kitty).
7.May I have      (some) hot dogs?Yes.Here you are.
8.How many      (child) are there in the music room?
      (there be)  one.
9.Are      (that)       (they)cups?Yes,they are.
10.The cat       (sleep) in the house now..
11.What can you      ( hear)?I can       (hear) a piano.
12.Are you      (draw) now?No,I am not.
13.Let’s      (go) to the garden.
14.      (taste) the cake,please.
15.What      they      (do)?
They                (dance) in the room.
牛津英语4B专项练习(二)
用所给词的适当形式填空。
1.Can she       (make) a cake? Yes,she       .
2 .How many rulers       (have) John got?He’s got five rulers.
3.Whose dogs       (be) these?  They’re Peter’s.
4.What can you       (touch)?  An orange.
5.Can you       draw) a lemon?Yes,I can.
6.What       (have) your friend got?
7.Listen!My son       (sing) an English song.
8.      (there be) not        (some) apples on the plate.
9.      (this) are        (fox) .They      (like) grapes.
10.      (touch) the pineapple.It’s rough.
11.Don’t talk. Mrs Chen       (play) the guitar.
12.It’s eleven o’clock.Henry       (eat) lunch.
13.Danny      (like) singing.Now he        (sing) in the hall.
14.Look,he       (have) a new toy car.Let’s       (play) with it.
15.Can the cats        (chase) the mice?Yes,they can.
16.      (there be) a pen and a ruler in the box.
17.        (not run) in the classroom.It’s dangerous.
牛津英语4B专项练习(三)
1. There are some orange penciles on the desk .(改为单数)
There              orange pencile on the desk .
2.The blue kite is a star. (对划线部分提问)
                  is the blue kite?
3.Eddie’s shoes are dirty. (对划线部分提问)
      Shoes are dirty?
4.Our Chinese books are on the shelf. (对划线部分提问)
        are  酱牛肉的做法最正宗的做法      Chinese books?
5.They are talking in the office. (改为一般疑问句)
      they         in the office?
6. Her father is writing a letter in the room. (对划线部分提问)
      is her father       in the room?
7.Linda can swim in the sea.( 改为一般疑问句)
      Linda swim in the sea?
8.Mary’s toy bear is beside the window. (对划线部分提问)
                  Mary’s toy bear?
9.Her brother can play the pianio. (对划线部分提问)
      can her brother       ?
10.His friend’s football is new. (对划线部分提问)
      football is new?
牛津英语4B专项练习(四)
1.Sally and Lily are reading a picture-book. (对划线部分提问)
      are Sally and Lily         ?
2.Sam can draw a little tree.(改成现在进行时)
Sam                   a little tree now.
3.My teacher is happy. (改为否定句,保持意思不变)
My teacher isn’t       .
4.It’s rough . (对划线部分提问)
          does  it       ?
纯熟5.This is Tim’s ball. (对划线部分提问)
          ball is this?将军岭
6. This pen is blunt. (改为否定句,保持意思不变)
This pen                    .
7.Mary can draw a panda. (改为否定句)
Mary        draw a panda.
律师的职责8.John is my good friend. (对划线部分提问)
                good friend.
9.There is a peach in the bag. (对划线部分提问)
How many                  there in the bag?
10. There is some juice in the bottle. (改为一般疑问句)
        there       juice in the bottle?
牛津英语4B专项练习(五)按要求改写句子。
1. May, go to the door,please.(改为否定句)
May,               to the door,please.
2.Are these sheep white? (改为肯定句)
                        white.