Example sentences of "not know for [adj] " in BNC.
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| 1 | They did not know then , were not to know for many years , were never fully to understand what it was that held them together — a sense of being on the margins of English life , perhaps , a sense of being outsiders , looking in from a cold street through a lighted window into a warm lit room that later might prove to be their own ? |
| 2 | I do not know for certain why I went up there to watch them doing it . |
| 3 | And though we do not know for certain , it does seem doubtful that the only sins against EPA science are those that have been revealed . |
| 4 | We do not know for certain what the total membership of any such set is , how many items belong to it , or the extent to which speakers vary in assigning items to the set . |
| 5 | However , at the beginning of the year we can not know for certain what the inflation rates will be ; we can only have expectations about what they will be . |
| 6 | A senior officer said : ‘ We have not exhausted all our enquiries yet and we do not know for certain if those ransom calls were the work of cranks . |
| 7 | The Trinidad crashed near Madrid , and to this day we still do not know for sure what happened . |
| 8 | Camilla 's sister , Annabelle Elliott , admitted that she does not know for sure whether there is any truth in rumours of a relationship with Prince Charles . |
| 9 | She thought that her father probably now earned more than £100,000 a year , but she did not know for sure because it was nine years since she had last visited him , four years since she had last received a Christmas card from him . |
| 10 | But even if we discover that vineyards vanished from south east England at a time when the climate was getting colder , we still do not know for sure why they disappeared . |
| 11 | Then , when price is low firms do not know for sure whether it was because someone cheated ( produced a larger than agreed output ) , or because demand was low . |
| 12 | What the precise purpose was of installing complex electronics in an old sailing vessel he did not know for sure , and Iain did not press him . |
| 13 | Ages recorded on death certificates ( and to a lesser extent on marriage certificates ) were not always accurate because the informant did not know for sure . |
| 14 | But we shall not know for some time yet . |
| 15 | Exactly how it happened we still do not known for sure but you can find examples of the kind of organisms it produced in almost any patch of fresh water . |
| 16 | Whether we get linguistic ability from our genes , or by imitating others or just from general intelligence is not known for sure . |
| 17 | This table gives the numbers of each moneyer 's coins in each hoard ; an x denotes that these are not known for certain . |
| 18 | Exactly what happened is not known for certain , but the most likely scenario is that Crabb was intercepted by Russian frogmen and taken on board the Ordzhonikidze through a ‘ wet chamber ’ . |
| 19 | Even if the exact number of rounds in the game is not known for certain , in real life it is often possible to make a statistical guess as to how much longer the game is likely to last . |
| 20 | It is not known for certain at what moment of time afterwards she looked at her fingers , in order to gaze admiringly at the ring . |
| 21 | It is not known for certain if the male and female form a pair bond . |
| 22 | The exact date is not known for certain , but is either July 12th or 19th 1958 . |
| 23 | Although it is not known for certain whether Yazid was present at Karbala , he is cast by the Shiites as the author of the incident , and the name is to this day a favourite Shiite epithet for a Sunni adversary — it was used in this sense during the 1980s war by the Tehran leadership when referring to that in Baghdad . |