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Question

①Eat potato chips and hamburgers.（改为否定句）
( ) ( ) potato chips ( ) hamburgers.
②We should [keep the air fresh]to fight the disease.（对中括号部分提问）
( ) ( ) we ( ) to fight the disease.
③Can you teach yourself English?（改为同义句）
Can you ( ) English ( ) ( )?
④They had a good time last Sunday.(改为同义句）
They ( ) ( ) last Sunday.

Answer 1

Don't eat or
what shall do
learn by yourself
enjoyed themselves

Answer 2

1 neither , eat , nor
2 what, shall,do
3 teach, by yourself
4 were, happy

Answer 3

1,don't eat or (祈使句，变否定句，句首＋否定词DON'T
2.what should do （对位于动词提问用疑问词what后＋一般疑问句
3.learn by yourself （teach oneself=learn by oneself自学）
4.enjoyed themseles （have a good time = enjoy oneself

Answer 4

①Eat potato chips and hamburgers.（改为否定句）
( Don't ) ( eat ) potato chips ( or ) hamburgers.
②We should [keep the air fresh]to fight the disease.（对中括号部分提问）
( what ) ( should ) we (do ) to fight the disease.
③Can you teach yourself English?（改为同义句）
Can you ( teach ) English ( to) ( yourself )?
④They had a good time last Sunday.(改为同义句）
They ( had ) ( fun ) last Sunday.

提问者： ♂回忆昨天♂ - 三级