【简介】感谢网友“雕龙文库”参与投稿，这里小编给大家分享一些，方便大家学习。
1. 宾语从句
2. 现在完成时
3. 一般过去时与现在完成时的用法比较：
【名师讲解】
1. Maybe/ may be
(1) maybe是副词，意思是大概，也许，常用作状语。
Maybe you put it in your bag.也许你把它放在包里了。
Will he come tomorrow?Maybe not. 他明天来吗?也许不。
(2) may be相当于是情态动词may与be动词搭配一起作谓语，意思是也许是，可能是。
It may be 9:00 when they arrive.他们可能于九点到达。
The man may be a lawyer. 那人也许是律师。
2. borrow/ lend/ keep/ use
(1) borrow表示的是从别人那里借来东西，即我们通常所说的借进来。
We often borrow books from our school library.我们经常从学校图书馆借书。
I borrowed this dictionary from my teacher. 我从老师那儿借来了这本字典。
borrow是一个瞬间完成的动作，因此不能与时间段连用。
You can borrow my recorder for three days. ( 错误 )
I have borrowed this book for only one week. ( 错误 )
(2) lend表示的是把自己的东西借给别人，即我们通常所说的借出去。
Thank you for lending me your bike.谢谢你把自行车借给我。
He often lends money to his brother.他经常借钱给他弟弟。
lend与borrow一样，也是一个瞬间完成的 动作，不能与一段时间连用。
(3) keep的意思也是借，但一般是指借来后的保存或使用阶段，是一段持续的时间，因此可以与时
间段连用。
You can keep my recorder for three days.我的录音机你可以借用三天。
I have kept this book for only one week.这本书我才刚借了一星期。
(4) use也可以当借用讲，但它的本意是用，使用。
May I use your ruler? 我能借你的尺子用一下吗?
He had to use this public telephone.他不得不使用这部公用电话。
3. leave/ leave for
(1) leave意思是离开，留下。
We left Shanghai two years ago.我们两年前离开了上海。
He left his cell phone in the taxi last week.他上周把手机落在出租车里了。
(2) leave for意思是前往，表示要去的目的地。
We will leave for Tibet next month.我们将于下月去西藏。
The train is leaving for Moscow.这趟火车即将开往莫斯科。
4. since/ for
(1) since用于完成时态，既能用作介词，也能用作连词，后常接时间点，意思是自从。
He has been a worker since he came into this city.
自从他来到这个城市，他就是工人了。
I have never seen him since we last met in Shanghai .
自从我们上次在上海见过之后，我再也没见过他。
since作连词，还有既然的意思。
Since you are interested in it, just do it. 既然你对它感兴趣，那就做吧。
You can have fun now since youve finished your work.
既然你已经做完了功课，就开心玩会儿吧。
(2) for用于完成时，用作介词，后常接一段时间，意思是经过。
I have learned English for five years.我已经学了五年英语了。
They have waited for you for 30 minutes.他们已经等了你三十分钟了。
for也可以用作连词，但意思是因为。
They missed the flight for they were late.他们由于完到了而误了航班。
He fell ill for many reasons.他由于多种原因病倒了。
9. except/ besides
(1) except是指不包括后面所提人或物在内的除了，可以理解为撇开不谈,表示两部分的不同。
Everyone is excited except me.
除我以外的每个人都很激动。(他们激动，而我却不激动)
All the visitors are Japanese except him.
除他以外的所有游客都是日本人。(其他人是日本人，可他不是)
(2)besides是包括后面所提人或物在内的除了，可以理解为除之外还、除之外又，表示两部分的相似性。
Twenty-five students went to the cinema besides him.
除他以外，还有25个学生去看了电影。(他和另外25人都去了)
We like biology besides English.
除了英语外，我们还喜欢生物。(生物和英语都喜欢)
besides还可用作副词，意思是此外;而且，常用于句首或句尾。
He is a great thinker, and besides, he is a politician.
他是一名伟大的思想家，除此以外，他还是一位政治家。
They encouraged me, and they supported me with money, besides.
他们不仅鼓励我，而且与我以金钱上的支持。
10. keep doing/ keep on doing
(1) keep doing指的是连续地、坚持不断地做某事，中间不间断。
It kept blowing for a whole day.刮了一整天风了。
The temperature keeps dropping.温度持续下降。
(2) keep on doing是指反复坚持做某事，但动作之间略有间隔。
They have kept on writing to each other for many years.他们已经互相通信多年了。
After drinking some water, he kept on talking.喝了一些水后，他坚持讲话。
11. seem/ look
(1) seem一般着重于以客观迹象为依据，意思是似乎、好象、看起来。
The baby seems to be happy.婴儿看上去似乎很高兴。
He seemed to be sorry for that.他似乎为那件事感到抱歉。
seem能与to do结构连用，而look不能。
It seems to rain. 似乎要下雨了。
They seemed to have finished their work.他们似乎已经完成了工作。
在it作形式主语的句型中只能用seem。
It seems that he is quite busy now.他现在看起来很忙。
It seems to us that there is nothing serious.在我看来没什么大不了的。
(2) look用作看起来;好像时，常从物体的外观或样貌上来判断，是以视觉所接受的印象为依据的。
The room looks clean.这间房看起来很干净。
The girl looks like her mother.那女孩看起来向她的妈妈。
12. such/ so
(1)such常用作形容词，用来修饰名词。
Dont be such a fool.别这么傻。
He is such a clever boy.他是如此聪明的一个男孩。
(2) so是副词，用来修饰形容词或副词。
He is so kind! 他真好心!
Why did you come so late? 你为何回来得如此晚?
当名词前有many, much, few, little等表示多、少时，应该用so。
He has so many friends.他有如此多的朋友。
Only so little time is left! 才剩这么一点儿时间!
13. either/ too/ also
(1)either用作也时是副词，常用于否定句句尾。
She is not a Japanese, Im not, either.她不是日本人，我也不是。
My sister doesnt like this song, either.我妹妹也不喜欢这首歌。
(2)too常用于肯定句或疑问句尾，表示也。
He likes China, too.他也喜欢中国。
Are you in Grade 3, too? 你也在三年级吗?
(3)also也常用于肯定句或疑问句，但一般位于句中。
We are also students.我们也是学生。
He also went there on foot.他也是走着去的。
Did you also want to have a look? 你也想看看吗?
1. 宾语从句
2. 现在完成时
3. 一般过去时与现在完成时的用法比较：
【名师讲解】
1. Maybe/ may be
(1) maybe是副词，意思是大概，也许，常用作状语。
Maybe you put it in your bag.也许你把它放在包里了。
Will he come tomorrow?Maybe not. 他明天来吗?也许不。
(2) may be相当于是情态动词may与be动词搭配一起作谓语，意思是也许是，可能是。
It may be 9:00 when they arrive.他们可能于九点到达。
The man may be a lawyer. 那人也许是律师。
2. borrow/ lend/ keep/ use
(1) borrow表示的是从别人那里借来东西，即我们通常所说的借进来。
We often borrow books from our school library.我们经常从学校图书馆借书。
I borrowed this dictionary from my teacher. 我从老师那儿借来了这本字典。
borrow是一个瞬间完成的动作，因此不能与时间段连用。
You can borrow my recorder for three days. ( 错误 )
I have borrowed this book for only one week. ( 错误 )
(2) lend表示的是把自己的东西借给别人，即我们通常所说的借出去。
Thank you for lending me your bike.谢谢你把自行车借给我。
He often lends money to his brother.他经常借钱给他弟弟。
lend与borrow一样，也是一个瞬间完成的 动作，不能与一段时间连用。
(3) keep的意思也是借，但一般是指借来后的保存或使用阶段，是一段持续的时间，因此可以与时
间段连用。
You can keep my recorder for three days.我的录音机你可以借用三天。
I have kept this book for only one week.这本书我才刚借了一星期。
(4) use也可以当借用讲，但它的本意是用，使用。
May I use your ruler? 我能借你的尺子用一下吗?
He had to use this public telephone.他不得不使用这部公用电话。
3. leave/ leave for
(1) leave意思是离开，留下。
We left Shanghai two years ago.我们两年前离开了上海。
He left his cell phone in the taxi last week.他上周把手机落在出租车里了。
(2) leave for意思是前往，表示要去的目的地。
We will leave for Tibet next month.我们将于下月去西藏。
The train is leaving for Moscow.这趟火车即将开往莫斯科。
4. since/ for
(1) since用于完成时态，既能用作介词，也能用作连词，后常接时间点，意思是自从。
He has been a worker since he came into this city.
自从他来到这个城市，他就是工人了。
I have never seen him since we last met in Shanghai .
自从我们上次在上海见过之后，我再也没见过他。
since作连词，还有既然的意思。
Since you are interested in it, just do it. 既然你对它感兴趣，那就做吧。
You can have fun now since youve finished your work.
既然你已经做完了功课，就开心玩会儿吧。
(2) for用于完成时，用作介词，后常接一段时间，意思是经过。
I have learned English for five years.我已经学了五年英语了。
They have waited for you for 30 minutes.他们已经等了你三十分钟了。
for也可以用作连词，但意思是因为。
They missed the flight for they were late.他们由于完到了而误了航班。
He fell ill for many reasons.他由于多种原因病倒了。
9. except/ besides
(1) except是指不包括后面所提人或物在内的除了，可以理解为撇开不谈,表示两部分的不同。
Everyone is excited except me.
除我以外的每个人都很激动。(他们激动，而我却不激动)
All the visitors are Japanese except him.
除他以外的所有游客都是日本人。(其他人是日本人，可他不是)
(2)besides是包括后面所提人或物在内的除了，可以理解为除之外还、除之外又，表示两部分的相似性。
Twenty-five students went to the cinema besides him.
除他以外，还有25个学生去看了电影。(他和另外25人都去了)
We like biology besides English.
除了英语外，我们还喜欢生物。(生物和英语都喜欢)
besides还可用作副词，意思是此外;而且，常用于句首或句尾。
He is a great thinker, and besides, he is a politician.
他是一名伟大的思想家，除此以外，他还是一位政治家。
They encouraged me, and they supported me with money, besides.
他们不仅鼓励我，而且与我以金钱上的支持。
10. keep doing/ keep on doing
(1) keep doing指的是连续地、坚持不断地做某事，中间不间断。
It kept blowing for a whole day.刮了一整天风了。
The temperature keeps dropping.温度持续下降。
(2) keep on doing是指反复坚持做某事，但动作之间略有间隔。
They have kept on writing to each other for many years.他们已经互相通信多年了。
After drinking some water, he kept on talking.喝了一些水后，他坚持讲话。
11. seem/ look
(1) seem一般着重于以客观迹象为依据，意思是似乎、好象、看起来。
The baby seems to be happy.婴儿看上去似乎很高兴。
He seemed to be sorry for that.他似乎为那件事感到抱歉。
seem能与to do结构连用，而look不能。
It seems to rain. 似乎要下雨了。
They seemed to have finished their work.他们似乎已经完成了工作。
在it作形式主语的句型中只能用seem。
It seems that he is quite busy now.他现在看起来很忙。
It seems to us that there is nothing serious.在我看来没什么大不了的。
(2) look用作看起来;好像时，常从物体的外观或样貌上来判断，是以视觉所接受的印象为依据的。
The room looks clean.这间房看起来很干净。
The girl looks like her mother.那女孩看起来向她的妈妈。
12. such/ so
(1)such常用作形容词，用来修饰名词。
Dont be such a fool.别这么傻。
He is such a clever boy.他是如此聪明的一个男孩。
(2) so是副词，用来修饰形容词或副词。
He is so kind! 他真好心!
Why did you come so late? 你为何回来得如此晚?
当名词前有many, much, few, little等表示多、少时，应该用so。
He has so many friends.他有如此多的朋友。
Only so little time is left! 才剩这么一点儿时间!
13. either/ too/ also
(1)either用作也时是副词，常用于否定句句尾。
She is not a Japanese, Im not, either.她不是日本人，我也不是。
My sister doesnt like this song, either.我妹妹也不喜欢这首歌。
(2)too常用于肯定句或疑问句尾，表示也。
He likes China, too.他也喜欢中国。
Are you in Grade 3, too? 你也在三年级吗?
(3)also也常用于肯定句或疑问句，但一般位于句中。
We are also students.我们也是学生。
He also went there on foot.他也是走着去的。
Did you also want to have a look? 你也想看看吗?
