Sometimes the bird sings./The bird sometimes sings./The bird sings sometimes.这鸟不时啼叫。 4.often可以放在句末，表示加强语气。 I haven been there very often.我并不常去那儿。 5.seldom，never可以放在句首，表示加强语气，但句子要用倒装语序。 Seldom have I met him in the street.我很少在街上碰见他。 Never has our great motherland been so prosperous as it is today.我们伟大的祖国从来没有像今天这样繁荣昌盛。 6.ever多用于疑问、否定及条件句中。 Have you ever been to Beijing?你曾到过北京吗? If you ever come to Guangzhou，be sure to let us know.如果你到广州来，务请通知我们。 7. ever放在疑问词后面，起强调作用。 Who ever can it be?到底是谁? What ever do you mean?你究竟什么意思? Where ever did you lose it?你究竟在哪里遗失的? (编辑：罗伟)
