On another occasion, Cooney asked a waiter, not too proficient in English, about the weather.
Here in California, per-pupil spending is half what it is in the best-funded states; at L.A. Unified, almost 70% of the district's students are not proficient in math and about 60% are not proficient in English.
Tika is now proficient in answering questions about breastfeeding.
I must admit that our boss, Mr. Fuh, was a decent man, proficient in English and knowledgeable about business management; he even provided health-care benefits for us, which was another reason some of the women worked here.
Although Ben graduated from novice to proficient in lying to himself about what mattered and what didn't, he couldn't stop himself from getting bogged down by his collection of failures.
To really understand how a lunar calendar works, you'd have to be proficient in math and learn about an Alexandrian astronomer named Ptolemy and... well, I can't even balance my checkbook so we'll just talk about the food and the funnies.
The university assumes you are proficient in English and in writing about academic topics.
They can also consider partnering with colleagues proficient in finance technology for guidance about blockchain, a technology capable of transforming how HR stores and verifies private employee data.
A minimal natural ribozyme sequence with proficient in vitro self-cleavage activity is about 85 nucleotides long and adopts a secondary structure with four paired regions (P1-P4).
Since [R] is new and likely carries a negative connotation due to a Mandarin transfer [cf. Chen 陳雅玲 (2010, 2012); Chuang and Fon (2017)], one would have expected speakers who are more proficient in Min to be more conservative about and thus more immune to negative phonological transfers from Mandarin.
A year and a half later, having become proficient in the BASIC programming language, he read about Apple's latest offering: the Apple II+.
