时态和语态2.ppt

用于“the＋比较级…,the＋比较级…”中,前一个用一般现在时表将来,后一个用一般现在时表将来或一般将来时,e.g. The more you eat, the fatter you （will） become. 3．一般将来时 ①表示倾向性动作。 Oil will float on water. Crops will die without water. This machine won’t work. 机器不能运转了。 What’s the matter with the pen？The ink won’t come out. 钢笔怎么啦？墨水不出了。 ②表示临时的决定、即刻的打算。 “I hear Wang Ling is ill in hospital.”“Then I’ll go to see her.” 4．一般过去时 ①I didn’t know，I didn’t mean，I thought等表示“原来不知 道”“本没想”“原以为”。 Sorry，but I didn’t mean to hurt you. ②用于虚拟语气中。（ it’s time…,I wish…, I would rather…,if only…, as if…, as though…） It is time that we went to bed. I wish I knew his name. I’d rather you lived with us. If only I could see her once. 试比较 (假设，事实)He walks as if he were drunk . He is walking this way and that as if he is drunk . 5. 现在进行时 现在进行时与always/forever/constantly /continuously等连用,表示满意、称赞、惊讶、厌恶等感情色彩, e.g. ①She’s always helping others. ②She’s constantly changing her mind. 3.动词be的现在进行时,表示一时的表现或暂时的状态,e.g. ①She is foolish.（生性如此） ②She is being foolish.（一时的表现） 能这样用的形容词多为angry, careful, clever, stupid, kind, brave, friendly, rude, polite等动态形容词。 固定句式或结构中的动词时态 1.This/It is the first/second time＋that从句。that从句中用现在完成时。 如把is改为was，则从句中用过去完成时。 This is the first time I have come here. It was the third time(that)he had made the same mistake. 2．It is/has been＋一段时间＋since 从句。since从句中用一般过去时。 如 把is改为was，则从句中用过去完成时。 It has been two years since I graduated from university. It was ten years since we had had such a wonderful time. 3．was/were about to do...when... 意为“将要做……(这时)突然……”。 I was about to go out when the telephone rang. 时态的区别 1.一般过去时与现在完成时 ①一般过去时表示过去某时间发生的动作或情况，与现在没有什么 联系，常与表示过去的时间状语连用。现在完成时则表示从过去 开始持续到现在的动作或情况，强调对现在造成的影响或结果， 常与for或since短语连用。 I didn’t see her last week.我上周没有见到她。 I haven’t seen her since