you must be careful when you cross the street中可以用if替代when吗
you must be careful when you cross the street中可以用if替代when吗
You must be careful when you cross the street.改为祈使句
you must be careful when you cross the street.(同义句)
连词成句:cross,be,the,when,careful,you,street
Be careful when you cross the street.为什么用cross而不用across?
you must be careful when you ( )the street
you must be ____(care)when you cross the street.
when crossing street,you must be careful
You must be careful when crossing the street.改为祈使句
用cross,be,the,when,careful,you,street连词成句
Be careful when you cross the street改成用非谓语动词
用非谓语动词改写这个句子be careful when you cross the street