【#文档大全网# 导语】以下是®文档大全网的小编为您整理的《中职英语1-3单元语法复习课》，欢迎阅读！
一、can的用法：
1. (表示能力、功能)能,会 June can drive now.
2. (表示可能性)可能,可能会 I think the work can be completed ahead of time.
3. (表示允许、请求)可以 You can't take the book out of the room. Can I use your pen? 4. (表示命令)必须 If you won't keep quiet you can get out.
5. (表示偶然发生的可能性)有时会 It can be quite windy there, especially in spring. 6. (表示惊讶)究竟;竟至于 What can it possibly be? 到底那是怎么一回事? 二、could的用法can的过去式；
（用于虚拟语气，表示与事实相反的设想）能；可以；（表示可能性）可能；（用于婉转语气）能，可以 三、may的用法
1.表示请求和允许，意思是：可以 He may come if he likes. 如果他想来，可以来 2.表示祝愿，意思是：祝„，（但愿）。
May the friendship between our two peoples last forever. 祝两国人民的友谊万古长青。 3.表示推测，意思是：可能（会），或许（会）。
It may rain this evening. You'd better take an umbrella. 今晚可能要下雨，你最好带上雨伞。 四、must的用法
1.表“必须”。 You must talk to them about their study.你必须同他们谈谈关于他们学习的事。 2.在否定结构中表不许。You mustn't leave here.你不能离开这儿。
3.表坚定的建议。 You must come and see us as soon as you get to Shanghai.一到上海你得马上来看我们。 4.表推测，暗含有很大的可能性，用在肯定句。He must be ill. He looks so pale.他肯定是病了。他的脸色那么苍白。注意： may 暗含的可能性较小。must 暗含的可能性较大。否定的猜测用can't The baby can't be ill. He is so active.那宝宝不大可能是病了。他那么活跃。 五、might的用法 might表示的可能性太小，没有足够的说服力去职责别人。
can, could 之间的区别，和 may,might 之间的区别在于，虚拟句和过去时态用后者，表示的可能性比原词小，但大部分时候2者可以互换，不会产生歧义或者对表述造成干扰。 六、should的用法
1.should 作为助动词 shall 的过去式，可以在间接引语中与第一人称主语搭配，表示过去将来时间。 2.should 作为情态动词，通常用来表示现在或将来的责任或义务，译作“应该”、“应当”，这时它可以和 ought to， be supposed to 互换使用。例如：You should （= are supposed to ） complete your test in time.
你们应该按时做完你们的实验。
七、 would的用法 1.would是will的过去式，Would you like～？ 表示请求、劝说，是很客气的说法。 Would you like a cup of tea？ 您愿意喝杯茶吗？
2.主语+would like to～ 表示“想要„„”的意思上，与„want to～意思一 样，但用此句型较客气。 I want to ask you a question.
3.最基本的虚拟语气句型: 主句用would/ should/ could/ might +动词原形。 八。ought to的用法
ought to 是一个可以加上to 的情态动词其意思与should是一样的,但是ought to 不能用于虚拟语气中表示推测,而should可以
ought to与should意思接近，大多数情况下二者可以互换，但是should谈的是自己的主观看法，ought to则更多反映客观情况，在谈到法律、义务和规定时使用。
如： We should／ought to help each other and learn from each other in our work． She is your mother, so you ought to support her．
We ought to go and see Mary tomorrow, but I don’t think we will．
There be句型的用法
一、构成：There be ...句型表示的是 “某处有(存在)某人或某物”，其结构为There be(is，are，was, were )+名词+地点状语。例如：1) There is a pencil in my pencil-case. 二、各种句式：
否定句：在be后加上“not”,也可用“no”来表示。如：1) There is an orange in her bag.→There isn’t an orange in her bag. →There is no orange in her bag.
一般疑问句：There be结构的一般疑问句变化只需把be动词移到句首，再在句尾加上问号即可。例如： 4) There is some money in her handbag.
→ Is there any money in her handbag? (疑问句和否定句中，some改为any, something改为anything.) 5) There is something new in today’s newspaper.→Is there anything new in today’s newspaper? 特殊疑问句：There be句型的特殊疑问句有以下三种形式
① 对主语提问：当主语是人时，用 “Who’s + 介词短语?”；当主语是物时，用 “What’s + 介词短语?”。其中there在口语中常常省略。注意：无论原句的主语是单数还是复数，对其提问时一般都用be的单数形式(回答时却要根据实际情况来决定)。如： 6) There is a bird in the tree. →What’s in the tree? 7) There are some bikes over there. →What’s over there? 8) There is a little girl in the room. →Who is in the room?
② 对地点状语提问：用 “Where is \ are + 主语?”表示（注意其答语变化）：例如：
9) There is a computer in my office. → Where is the computer? ----It’s in my office. 10) There are four children in the classroom. →Where are the four children? --They’ re in the classroom.
③ 对数量提问：一般有两种提问方式：
如果主语是可数名词，无论是单数还是复数，都用“How many +可数名词复数 + are there + 介词短语？”表示：11) There are twelve months in a year. →How many months are there in a year? 12) There is only one book in my bag. → How many books are there in your bag? 13) There is a cat in the box. → How many cats are there in the box?
如果主语是不可数名词，则用“ How much + 不可数名词 + is there + 介词短语？”表示： 14) There is some money in my purse.→ How much money is there in your purse? 反意疑问句：There be或There加其它动词，其反意疑问句一律用„there? 例如： 15）There is a beautiful girl in the garden, isn’t there? 三、用法：
1. There be句型中be动词的形式要和其后的主语在人称和数上保持一致。
1) There is a basketball in the box. There are many birds in the tree.
如果有两个或两个以上的名词作主语，be动词要和最靠近它的那个主语在数上保持一致，也就是我们常说的 “就近原则”。例如：5) There is an orange and some bananas in the basket. 6) There are some bananas and an orange in the basket.
2. There与be中间可插入一些表推测的情态动词、表时态的短语(如和将来时be going to\ will、现在完成时 have\has + pp. ) 例如：1) There must be a pen in the box.
2) Is there going to be a dancing party tonight?4) There has been a big tree on the top of the hill. 3. 英语中有些动词或短语具有一定的情态含义，我们称之为半助动词。There be句型中的谓语动词be可与这些半助动词连用，表达更为复杂的意念。能用于There be句型中的这类词语主要有：happen to（碰巧），appear ／seem to（似乎），used to（曾经），have to（必须），be likely to（很可能），be bound to（必定）等。例如： 1)There happened to be an old friend of mine in the club在那个俱乐部碰巧有我的一个老朋友。 2)There appear to be several reasons for changing our plans．看来改变我们的计划有几个理由。
3)There used to be a cinema here before the war．战前这里曾有一个电影院。 4．There be +名词+地点/时间状语There was a party in the hall last night. 6．由there be构成的固定句型
由there be构成的一些固定句型在英语中很活跃，需很好地掌握。常见的有： There is no point (in) v-ing：没道理，没用，没必要
There is no use（in）＋v-ing：毫无用处 There is no sense (in) v-ing：毫无道理 There is no need （for sb.）to ＋v：没有必要
There is no ＋v-ing：不可能，无法。 相当于“It is impossible+ to do sth.”
例如： 1)There is no use in hiding that fact from him ．对他隐瞒那个事实没什么用。 2) There is no point in arguing further．再争下去也没用。 3)Is there any point in going on？有必要再继续下去吗？
4)There was no need for him to remain in Shanghai．他没有必要再留在上海。
5) There was no sense in making a child suffer likethat．让一个孩子受那样的苦是毫无道理的。 7. There be句型和have\has的区别：
There be句型表示 “存在有”, have\has表示 “拥有” “所有”,两者不能同时使用.例如： 1) The tree has many apples on it. 2) There are many apples on the tree.
3) There have many apples on the tree.(×) 4) There’s a picture on the wall. 5) There are six rooms in this house.
本文来源：https://www.wddqxz.cn/3f25e130fc00bed5b9f3f90f76c66137ef064f79.html
2022-04-18
