英语昨天的过去式

前一个是1.started是动词过去式2watch是to do不定式的应用，to 后加动词原形find sth。 done 这是一个固定结构，要记住，find 是因为这是过去时态

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第一句to 跟动词原型，第二句found表示过去的动作， was 表状态。在英语中，常用的过去式有一般过去式，过去进行式，过去完成时一般过去时的基本用法 1 带有确定的过去时间状语时，要用过去时如：yesterday（昨天）、two days ago…（两天前…… ）、last year…（去年…）、the other day（前几天）、once up on a time（过去曾经）、 just now（刚才）、in the old days（过去的日子里）、before liberation（解放前…）、 When I was 8 years old（当我八岁时…）Did you have a party the other day？前几天，你们开了晚会了吗？Lei Feng was a good soldier.雷锋是个好战士。注意在谈到已死去的人的情况时，多用过去时。 2 表示过去连续发生的动作时，要用过去时这种情况下，往往没有表示过去的时间状语，而通过上下文来表示。The boy opened his eyes for a moment，looked at the captain，and then died.那男孩把眼睛张开了一会儿，看看船长，然后就去世了。3 表示过去一段时间内经常或反复的动作常与always，never等连用。Mrs. Peter always carried an umbrella.彼得太太过去老是带着一把伞。（只是说明她过去的动作，不表明她现在是否常带着伞。）比较Mrs. Peter always carries an umbrella.彼得太太老是带着伞。（说明这是她的习惯，表明她现在仍然还习惯总带着一把伞）I never drank wine.我以前从不喝酒。（不涉及到现在，不说明现在是否喝酒）4 如果强调已经终止的习惯时要用used to doHe used to drink.他过去喝酒。（意味着他现在不喝酒了。喝酒这个动作终止了）I used to take a walk in the morning.我过去是在早晨散步。（意味着现在不在早晨散步了）I took a walk in the morning.我曾经在早晨散过步。（只是说明过去这一动作）比较I took a walk in the morning .我曾经在早晨散过步。（史是说明过去这一动作）5 有些句子，虽然没有表示过去确定时间的状语，但实际上是指过去发生的动作或存在的状态的话，也要用过去时，这一点，我们中国学生往往出错，要特别注意！I didn''t know you were in Paris.我不知道你在巴黎。（因为在说话时，我已经知道你在巴黎了。这句话指的是说话之前，所以只能用过去时表示。实际上，这句话暗指：But now I know you are here.）I thought you were ill.我以为你病了呢。（这句话应是在说话之前，我以为你病了。但是现在我知道你没病）现在完成时的用法 have(has)+过去分词(done) 1.现在完成时用来表示现在之前已发生过或完成的动作或状态,但其结果却和现在有联系,也就是说,动作或状态发生在过去但它的影响现在还存在. I have lost my wallet.(含义是:现在我没有钱花了.) Jane has laid the table.(含义是:已可以吃饭了.) Michael has been ill.(含义是:现在仍然很虚弱) He has returned from abroad. (含义是:现在已在此地) 2. 现在完成时可以用来表示发生在过去某一时刻的,持续到现在的情况,常与for,since连用. Mary has been ill for three days. I have lived here since 1998. 3. 现在完成时往往同表示不确定的过去时间状语连用,如already, yet, just, before, recently, lately等: He has already obtained a scholarship. I haven't seen much of him recently (lately). We have seen that film before. Have they found the missing child yet 4. 现在完成时常常与表示频度的时间状语连用,如often, sometimes, ever, never, twice, on several occasion等: Have you ever been to Beijing I have never heard Bunny say anything against her. I have used this pen only three times. It is still good. George has met that gentleman on several occasions. 5. 现在完成时还往往可以同包括现在时间在内的时间状语连用,如now, up to these few days/weeks/months/years, this morning/week/month/year, now, just, today, up to present, so far等: Peter has written six papers so far. Man has now learned to release energy from the nucleus of the atom. There has bee too much rain in San Francisco this year. The friendly relations and cooperation between our two countries have been enhanced in the past few years. Up to the present everything has been successful. 6. 现在完成时表示现在之前业已完成的动作,虽然其效果或影响仍然存在但已不再继续,但是有一些现在完成时的句子,在后面加上for+一段时间,则现在完成时的动作就表示延续性. Thomas has studied Russian. (现在不再学俄语) Thomas has studied Russian for three years. (=Thomas began to study Russian three years ago, and is still studying it now.(同第2点用法第一个例句) 7. 现在完成时还可以用来表示过去的一个时间到现在这段时间内重复发生的动作.一般过去时的公式肯定① be 分为was,were ② v+ed否定① was/were not ② didn’t+v疑问① was/were+ 主 ② did+主+V参考资料：

昨天 yesterday今天 today明天 tomorrow这是三个表示时间的状语，是没有过去式的，英语中只有动词才有过去式。希望能帮到你~ 望采纳哟！ 精~~~~~~~~锐