越过
cover
鸽子
pigeon
Where is his first garage?
It's in Silbury.
请说出现在进行时的结构和标志词
be doing
now,at the moment,listen,look...
备件
spare part
业务、服务
service
Where has Mr. Scott opened his second garage?
He has opened his second garage in Pinhurst.
I ran across the street after the dog.变为否定句和一般疑问句
I didn't run across the street after the dog.(否定句)
Did you run across the street after the dog?(一般疑问句)
信息
message
距离
distance
What has he bought?
He has bought 12 pigeons.
请说出一般现在时的结构和标志词
do、does/am、is、are
always,often,usually,sometimes,rarely,every...
要求、请求
request
到现在为止
up to now
How far away is Silbury?
It's only five miles.
请说出一般过去时的结构和标志词
did/was、were
yesterday,last,ago,in,when...
另一个
another/the other
大量的
a great many
In how many minutes do they carry messages from one garage to the other?
They carry messages in three minutes.
请说出现在完成时的结构和标志词
have/has done
already,yet,ever,never,just,for,since,recently...