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firstly , i'm very thankful to Avangi & Clive, two of the most dynamic & selfless members, i think ,in this forum. I have posted 2 questions and both of them have been replied by them immediately and thoughtfully.

today , i have 2 other questions and i need English-forums's members to help me again.
1, Jane is my mother.She is the "rock of our family."
2,Marie Curie ,whose discover of radium made her famous ,was a French physicist.
what does "rock of our family " mean in the first sentence , and where is the mistake in the second sentence?
thank you.
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1. The "rock of the family" is the strong, stable person that everyone depends on.

2. "Discover" is a verb. This sentence needs the noun, "discovery."
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1. She is the foundation of our family. Everything our family does it built on her.

2. discovery
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Comments  
Hi,
i have 2 other questions and i need English-forums's members to help me again.
1, Jane is my mother.She is the "rock of our family."
2,Marie Curie ,whose discovery of radium made her famous ,was a French physicist.

what does "rock of our family " mean in the first sentence ,
The person who has the strength. The person who is the foundation. The person on whom all other family members depend for strength, safety and security.

and where is the mistake in the second sentence? As above.

(And she was actually born in Poland. )

Best wishes, Clive
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