(9) I tell you．(我可以告诉你。)
Im telling you．(我告诉你吧。有感情色彩)
(10) He always sleeps in the afternoon．(强调下午睡觉)
He is always sleeping in the afternoon．(后者意味着整个下午都睡觉了)
(11) I expect you to phone me．(几乎等于命令)
Im expecting you to phone me．(婉转)
(12) What do you say?
What are you saying?(你说些什么呀?表说话人惊讶，不满)
(13) I find that the book is too difficult for me．(强调结果)
Im finding that the book is too difficult for me．(强调过程，逐渐感到)
(14) Apples cost more these days．(强调事实)
Apples are costing more these days．(越来越贵)
(15) He always thinks of others．(强调事实)
Hes always thinking of others．(表示赞扬)
(16) Whenever I see him，he argues with somebody．(强调两个动作有先后)
Whenever I see him，he is arguing with somebody．(强调两个动作同时进行)
(17) I hope youll give us some advice．(语气直白)
Im hoping youll give us some advice．(表示语气婉转)
(18) I must go．(我应该去。)
I must be going．(我该走了。)
(19) We can discuss this while we eat．(说话时没用餐)
We can discuss this while we are eating . (进餐已开始)
Its been a long time since Isaw you last 这两句话一样，后一句是美国英语)
(20) Where are you?(在哪儿) Where have you been?(去了哪儿)