Málfræðileiðarvísir

Leiðir opinbera málfræðileiðarvísisins eru tilbúnar fyrir staðfært efni.

Can, Can’t, Could og Couldn’t

Hvað er það?

Can, can’t, could og couldn’t eru hjálparsagnir (modal verbs).

Þær eru notaðar til að tala um:

  • núverandi getu
  • fyrri getu
  • leyfi
  • beiðnir
  • möguleika

Can er jákvæða formið.

  • I can swim.

Can’t er stytting á cannot.

  • I can’t drive.

Could er oft notað fyrir fyrri getu eða kurteisar beiðnir.

  • She could read when she was four.
  • Could you help me?

Couldn’t er stytting á could not.

  • We couldn’t find the address.

Hvenær á að nota

Notaðu can fyrir núverandi getu.

  • He can speak English.
  • I can cook.

Notaðu can’t þegar einhver getur ekki gert eitthvað.

  • She can’t swim.
  • We can’t come today.

Notaðu can til að biðja um eða veita leyfi.

  • Can I use your phone?
  • You can leave early.

Notaðu could fyrir almenna getu í fortíð.

  • I could run fast when I was younger.
  • They could speak French as children.

Notaðu couldn’t fyrir skort á getu eða misheppnaðar aðstæður í fortíð.

  • He couldn’t read the sign.
  • We couldn’t open the door.

Notaðu can eða could til að setja fram beiðnir.

  • Can you close the window?
  • Could you close the window?

Could er venjulega kurteisara en can í beiðnum.

Uppbygging

Notaðu grunnform sagnarinnar á eftir can, can’t, could og couldn’t.

Form Uppbygging Dæmi
Nútíð jákvætt frumlag + can + grunnsögn She can drive.
Nútíð neikvætt frumlag + can’t + grunnsögn She can’t drive.
Fortíð jákvætt frumlag + could + grunnsögn She could drive at eighteen.
Fortíð neikvætt frumlag + couldn’t + grunnsögn She couldn’t drive last year.

Formið er það sama fyrir öll frumlög.

  • I can swim.
  • He can swim.
  • They can swim.

Ekki bæta við -s á eftir he, she eða it.

Spurningar

Notaðu:

Can/Could + frumlag + grunnsögn?

Spurningategund Dæmi
Núverandi geta Can you swim?
Leyfi Can I sit here?
Beiðni Can you help me?
Kurteis beiðni Could you help me?
Fyrri geta Could she read at five?

Stutt svör

  • Can you drive? — Yes, I can.
  • Can he come? — No, he can’t.
  • Could they swim? — Yes, they could.
  • Could she open it? — No, she couldn’t.

Dæmi

  1. I can speak a little Spanish.
  2. She can’t come to work today.
  3. Can you help me with this box?
  4. Can I open the window?
  5. You can use my computer.
  6. He could swim when he was five.
  7. We couldn’t find a taxi last night.
  8. Could you speak more slowly, please?
  9. They could not hear the announcement.
  10. My brother can cook very well.

Undantekningar

Notaðu could fyrir almenna fyrri getu.

  • She could play the piano when she was young.

Fyrir eina sérstaka velheppnaða aðgerð í fortíð er was able to oft eðlilegra.

  • We were able to fix the problem yesterday.

Hins vegar er couldn’t eðlilegt fyrir sérstaka misheppnaða aðgerð.

  • We couldn’t fix the problem yesterday.

Cannot er skrifað sem eitt orð.

  • Rétt: cannot
  • Rangt: can not

Formið can not er aðeins mögulegt þegar not tilheyrir öðrum orðasamböndum, en þessi notkun er sjaldgæf.

Algengar villur

  1. Rangt: She cans swim. Rétt: She can swim. Skýring: Ekki bæta við -s við hjálparsagnir.

  2. Rangt: I can to drive. Rétt: I can drive. Skýring: Notaðu grunnsögnina án to á eftir can.

  3. Rangt: He could speaks English. Rétt: He could speak English. Skýring: Notaðu grunnformið á eftir could.

  4. Rangt: Do you can help me? Rétt: Can you help me? Skýring: Ekki nota do í spurningum með can.

  5. Rangt: I don’t can swim. Rétt: I can’t swim. Skýring: Notaðu can’t, ekki don’t can.

  6. Rangt: She could to read at four. Rétt: She could read at four. Skýring: Ekki nota to á eftir could.

  7. Rangt: Can you helped me? Rétt: Can you help me? Skýring: Notaðu grunnform sagnarinnar á eftir can.

  8. Rangt: I couldn’t found my keys. Rétt: I couldn’t find my keys. Skýring: Notaðu grunnformið á eftir couldn’t.