The part of the sentence "proficiency with which" is correct and can be used in written English.
You can use this phrase when you are referring to someone's abilities, knowledge, or skill. For example, "My professor was impressed with the proficiency with which I completed the assignment."
And the speed and proficiency with which these players learn Henderson's aggressive system will play an important role in any success that the Jets have this season.
Yet "San Francisco" is an exercise in American stoicism, and the wryness and proficiency with which its characters respond to chaos remain a defensible dream.
The final outcomes of these studies are affected by factors including the proficiency with which the researchers use experimental techniques, the quality of samples and the conditions of equipment and consumables.
Based on these previous findings, the goal of the present study was to exploit the sensitivity of parents in assessing the proficiency with which CI and NH siblings perceived nuance in speech.
But what is different now is the proficiency and regularity with which terrorist groups are calling on Muslims to carry out jihad against "kufirs", or non-believers, in the countries in which they live.
This gives high schools the two pieces of information it most needs: its college enrollment rate and its "college proficiency" rate (the speed with which graduates complete a year of college-level coursework).
This echoes Tamai's (2002) study results on the effect of shadowing on listening skills among Japanese EFL learners, that shadowing was more effective for students with lower English proficiency than for those with higher proficiency, which is considered to be due to there being more room for improvement.
As these researchers suggested, consistent and explicit use of the definition of multiplication can support the development of teachers' proficiency with quantitative reasoning, which may further provide a basis for PTs to unpack mathematical tasks in ways that prompt students' mathematical reasoning and explanations.
Overall, Luna wrote, "[t]he speed with which scientists can hope to achieve narrative proficiency using the tools in the book is one of its remarkable strengths and a testament to Olson's straightforward advice". .
A third do not speak English, or speak it with limited proficiency, which restricts their ability to participate meaningfully in society.
However, PIK3CA mutations were associated with BRCA proficiency, which can have clinical consequences in the near future.
