The phrase "achieved since they" is grammatically correct and can be used in written English.
It can be used when discussing results or outcomes that have occurred as a result of certain actions or conditions over a period of time.
Example: "The goals we set for the project were achieved since they were clearly defined from the beginning."
Alternatives: "accomplished because they" or "attained as they".
A study of Shanghai workers in the early twentieth century reveals that the presumed solidarity among workers was never achieved since they varied greatly in skill level, birthplace, work situation, seniority, and gender.
Several recent European studies suggest that such a goal has not yet been achieved since they have evidenced that low social class cancer patients in rural areas have a poorer survival rate than higher social class patients in urban areas (Auvinen and Karjalainen, 1997).
These were often difficult to achieve, since they undercut the power bases of influential men at court.
This is of clinical interest because goals that are less specific (typically goals drawn from a higher level in the goal hierarchy) are broadly regarded as being more difficult to achieve, since they lack information that can direct behaviour and provide cues to action (Emmons 1992; Gollwitzer and Brandstatter 1997; Locke and Latham 2002).
Having beaten Aston Villa, Wigan and Ipswich, Millwall were aiming for a fourth home league win in a row, something they had not achieved since April 2016 - but they were stopped in their tracks by a Bolton side hunting their first away win in three months.
Wales are bidding for a fourth consecutive win over the French in Paris this weekend - a feat they have not achieved since the 1950s when they won six matches in a row between 1952 and 1957.
Here, the design duo elaborates on their fashion backgrounds, the successes they've achieved since their pop-up at Begrdorf Goodman and what they're doing to expand further.
Few oncologists are as gloomy about what they have achieved since the 1970s – childhood leukaemia and breast cancer are only two malignancies that are no longer the death sentence that they once were.
The crowd repeatedly rose to their feet to applaud Sanders as he reiterated many of the points he's made at countless rallies across the country, and reminded them of what they had achieved since he declared his campaign for president in May 2015.
He asks the chief executive Hamish Trench what have they have achieved since their formation and what still needs to be done.
The Reds entertain Aston Villa on Saturday looking for a third straight league win - something they have not achieved since the 2010-11 season.
