an though的through是介词,意思是:穿过,通过.它不是副词need doing sth.与 need to be done.相同,只有need可接doing表被动的用法
needs mending = needs to be mended.否定形式可以用doesn't need mending和doesn't need to be mended.
an though的through是介词,意思是:穿过,通过.它不是副词need doing sth.与 need to be done.相同,只有need可接doing表被动的用法
needs mending = needs to be mended.否定形式可以用doesn't need mending和doesn't need to be mended.