I am very confused about whether I should use 'at'(or 'in') and 'the' at the same time...<br/><br/>Don't people usually say : 'love at first sight'?<br/><br/>Is the above phrase grammatically incorrect? Should it instead be 'love at the first sight'?<br/><br/>Another question is can I replace 'at' with 'in'?<br/><br/>Thanx this site has been such a boon for the development of my english.