Ni chytunwn fyth

We will always differ

Ni ddigwydd hynny fyth eto

That will never happen again

Peter Black : Ni allwn i fyth obeithio efelychu eich sgiliau acrobatig chi

Peter Black : I could never hope to match your acrobatic skills

Ni ddylem fyth anghofio hynny

We should never forget that

Nid all geiriau fyth fod yn ddigon

Words can never be enough

Caiff mwy fyth anhawster o ran rhifau

Even more have trouble with numbers

Ni fyddai fyth wedi digwydd heb efeillio

It would never have happened without twinning

Nid ydym fyth yn cyrraedd y gwir faterion

We never seem to get down to the issues that matter

Synnodd ymateb David Davies fi fwy fyth

I was even more astonished by David Davies's response to this

Ni faddeuaf fyth iddynt am wneud hynny

I will never forgive them for that

Gadewch inni droi yn awr at fyth tâl athrawon

Let us turn now to the myth of teachers ' pay

Nid oes dim fyth yn syml gyda Llafur Newydd

Nothing is ever straightforward with New Labour

Ni olyga na fydd unrhyw anghytundeb fyth eto

It does not mean that there will never be any disagreements

Mae eu rôl yng Nghymru wledig yn bwysicach fyth

Their role in rural Wales is even more significant

Ymddengys mai ` rhywbryd fyth ' yw ei harwyddair

` Sometime never ' seems to be its motto

Ni ddylai'r Ceidwadwyr fyth anghofio hynny

The Conservatives should never forget that

Ni wnaiff eich ysgerbwd albatros chi fyth grino

Your albatross carcass will never wither

Ni ddylem fyth gymryd y sector yn ganiatol

We should never take this sector for granted

Ni all y Llywodraeth fyth ennill ym marn y gwrthbleidiau

The Government can never win in the eyes of opposition parties

Os na allwch chi amddiffyn , wnewch chi fyth alluogi

If you cannot protect , you will never enable