"he made a bad mistake"
"she was quick to point out my errors"
"I could understand his English in spite of his grammatical faults"
"a flaw caused the crystal to shatter"
"if there are any defects you should send it back to the manufacturer"
"they discussed the merits and demerits of her novel"
"he knew his own faults much better than she did"
"they built it right over a geological fault"
"he studied the faulting of the earth's crust"
"it took much longer to find the fault than to fix it"
"it was John's fault"
"he served too many double faults"
She is cautious to a fault.
她过分谨慎了。
He found fault with my composition.
他挑剔我的作文不好。
It was my fault that I had written the wrong address.
写错了信的地址，那是我的错。
The cup broke through no fault of the girl.
打碎杯子并不是这个女孩的错。