1.用sell,cost,believe,decide造句.2.①Shehasretiredforalongtime.→改为否定句和疑问句.（用上yet.）②翻译：桌上有一些牛肉,篮子里有些鸡蛋.③He(notsell)thishouseyet.④We(play)thepianoatthemome

Question

1.用sell,cost,believe,decide造句.
2.①She has retired for a long time.→改为否定句和疑问句.
（用上yet.）
②翻译：桌上有一些牛肉,篮子里有些鸡蛋.
③He________(not sell)this house yet.
④We____(play)the piano at the moment.
3.现在进行式、一般现在式、一般过去式、现在完成式的公式和单三形式公式.
Thanks.

Answer 1

一.
sell:I sold 2 coats yesterday.
cost:The coat coats me 200 yuan.
believe:I don'tbelieve you.
decide:I decided to get up early.
二.
She hasn't retired yet
Has she retired yet?
There is some beef on the table and some eggs in the basket.
1.yet是现在完成时标志词,所以是hasn't sold.
2.at the moment是现在进行时的标志词,所以是are playing.
现在进行式：be(am、is、are)+doing
一般现在式:be(am、is、are)+形容词 do+n.
一般过去式：be（was、were）+形容词 did+n.
现在完成式：have、has+done