改成否定句：1、alexandra is in egypt.2、alexandra is american.3、alexandra is from los angeles.4、alexandra is fourteen years old.5、her address is 40 park street

改成否定句：1、alexandra is in egypt.2、alexandra is american.3、alexandra is from los angeles.4、alexandra is fourteen years old.5、her address is 40 park street That is her backpack 改成否定句 It is my pencil.改成否定句 this is my eraser.改成否定句 this is my ruler改成否定句 That is a UFO.改成否定句 That is my aunt.改成否定句 This is his backpack.改成否定句 This is a pagoda.改成否定句 the tiger is running..改成否定句 the tiger is running..改成否定句 there is a book 改成否定句 it is friday tomorrow 改成否定句 John is ill.改成否定句 This is our new timetable.改成否定句.英文句 改成双重否定句. 改成否定句, 改成双重否定句