Example sentences of "[verb] been [noun pl] over time " in BNC.
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1 | Most importantly , there have been fluctuations over time in the actual existence of kin who might provide such support for each other . |
2 | Wall 's ( 1986 ) evidence suggests that there have been fluctuations over time in patterns of who actually shares households , but that these have not been in a single direction . |
3 | The law gives dividing lines , but there have been changes over time . |
4 | Finally , there have been changes over time in the rates of divorce and marriage , although the significance of these for patterns of kin relations may be not so obvious as it first appears . |
5 | Thus there have been changes over time in patterns of support between generations , but these are not necessarily a result of individuals ' changing beliefs and values about family responsibilities . |