speak造句简单？

speak的情态动词？ tell,say,speak,talk的用法及区别还有例句？ speak和say和talk和tell的区别？ SPEAK.SAY,TALL,TALK的区别？ speak it 还是say it？ speak say talk in的区别？ speak前面要不要加be动词或者情态动词？ speak english和speak in english的区别？ speak of和speak for的区别？ speaktalk的区别？