月份：2005年4月

1.request permission;

polite:can(friends and equals)<could,may<might(superior)

2.may/might + infinitive

  may/might + perfect infinitive

3.may/might as well + infinitive

  for example:

  I might as well play game( as learn english-it makes no difference).

(1)sinA+sinB=2sin((A+B)/2)cos((A-B)/2);

(2)sinA-sinB=2cos((A+B)/2)sin((A-B)/2);

(3)cosA+cosB=2cos((A+B)/2)cos((A-B)/2);

(4)cosA-cosB=-2sin((A+B)/2)sin((A-B)/2);

I haven't finish today's learning plan-only finished 4 pages of 10 pages.That's ok,I am a lazy man today.I am not a machine.

  When "have" expresses the meaning of "possess",it equal to "have got".

  For example:

  This sock has (got) a hole in it.

  This room has (got) four windows.

  But in the sentence below,it cann't be replaced by "have got":

  They had a good time at the party.

  its meaning is:to enjoy or suffer;experence,often as part of a group

  At this viewpoint,"have" is a unversal word.for example:have meal,have letter,have a look,have it...

  We can view these in LONGMAN dictionary.p701-702

  A ten pages a day,a lesson a day,one hundred a day...

  No passion,no interesting,only aim.

  Aim is first,other is second,other is surrounding this aim.

  This is my life.

  Persist.

  Learning math has been started.

  An initial plan,root on the book,ten pages a day.'A' first.

  Today,it is a first ten pages.

  Persist,I will finish it.

  Wish me successful.

  From a viewpoint,Mathematics is one of the bases of the program.

  There are two way in "must".

  First,it says:this is your necessity,you have to face it.at this meaning,it has no PAST tense and FUTURE tense itself.

  PAST TENSE:I had to do it.

  FUTURE TENSE:I will have to do it.

  Second,it says:this is your obligation.This is a deduction.at this meaning,it can express a past action: (modal + perfect inifitive) He must have done it.

  Another point:

  I have to do it.(no contraction)

  I've got to do it.(the contraction is always used)

NCE L16

1.If it rains,I will stay at home tomorrow.

2.if it is raining,don't go out.

3.I will stay at home when you are out.

let + obj + bare infinitive

I won't let you go if you don't pay my money. 

Let me do it myself.

  Three weeks before,I applied for an Open Source Software Engineering Project at www.tigris.org.It has not been approved.I think,I can learn something from this.

  I plan to do a design with UML for the filesharing module.

  I think that giving up all other learning except my main aim absolutely is not very proper-like flavouring versus food.