Tom is always late for school.（改为否定句）Tom（）（）late for school.

Tom is always late for school.（改为否定句）Tom（）（）late for school.
Tom is always late for school.（改为否定句）
Tom（）（）late for school.

Tom is always late for school.（改为否定句）Tom（）（）late for school.
is never

is never

Tom isn't always late for school

Tom isn't always late for school.
希望可以帮到你~（^_^）