請幫忙做個 gramma check 吧

先講講頭兩句.................

1)YOUR OWN ANSWER COULD BE FOUND

2)YOU COULD FOUND YOUR OWN ANSWER

第一句意思同文法都冇問題~岩晒^^
第二句意思冇問題，但系文法上就有錯啦
你要記住系can/may/should/will(include past tense).....之後果個verb我地系唔會轉任何tense架
e.g. I can _BRING_(bring) my mobile phone only when I have teacher's permission.
所以第二句要改為{you could find your own answer.}先岩架!
第一句之所以可以用FOUND系因為佢系一個PASSIVE VOICE!!
總括黎講............佢地既意思都系一樣既~

至於第三四句呢............

3)NEED NO COPY

4)NO NEED COPY

第三句都有問題!
我地可以講{NO NEED}但系唔可以講{NEED NO}
我地只系得NEED {NOT} DO SOMETHING
所以第三句改番做{need not copy}就岩晒啦!!!

不過第四句文法有錯，要轉番做{NO NEED *TO* COPY}先岩!
果個*TO*既作用系等於TO-infinitive
熟黎個GRAMMAR既人應該會知道to-infinitive其中一個用途系用黎表示to__verb_____意思系做一樣野而達成to之後果個目的~
e.g. I work hard to get a good result in HKCE examination.


by the way,佢地兩句既意思都系一樣!
所以四句之中，只有第一句系岩晒既!!

thanks

YOUR OWN ANSWER COULD BE FOUND--------OK
YOU COULD FOUND YOUR OWN ANSWER------NO


NEED NO COPY---------OK
NO NEED COPY---------OK

1.Your own answer could be found <---ok
2. You could find your own answer <--infinitive after could
3.need no copy <--ok
4. no need to copy <-- I think copy is a verb here but I am uncertain.

The emphases in the first two sentences are different.

YOUR OWN ANSWER COULD BE FOUND

YOU COULD FIND YOUR OWN ANSWER


NEED NOT COPY

NO NEED TO COPY