把句子改为否定句。

He can swim well．

________________________________

把句子改为否定句。

You should clean the fish tank today．

________________________________

把句子改为否定句。

Give her a shower．

________________________________

把句子改为否定句。

You ought to feed your dog at the table．

________________________________

句型转换

You must take the dog for a walk once a week．

________________________________

句型转换

I want you to give me some food．

________________________________

句型转换

You should not frighten the cat．

________________________________

句型转换

You ought to clean the cage once a week．

________________________________

句型转换

把句子改为祈使句。

You must work hard at your lessons．

________________________________

My father is busy ________ his work all day．

A．

in

B．

at

C．

with

D．

for