英語四級高頻詞匯：表示順序與時間的連接詞

　　大學英語四級詞匯量是否豐富在英語四級考試中非常關鍵，因此，在備考英語四級的過程中考生們一定要注意對核心詞匯、核心詞組的掌握

　　順序關系：first; second; thirdly; next; then; at the outset，following this; at this time; now; at this point; after; afterward; after this; subsequently; lastly; finally; consequently; before this; previously; preceding this; simultaneously; concurrently.

　　時間關系：at once; immediately; at length; in the mean time; meanwhile; at the same time; in the end; then; soon; not long after; later; at once; at last; finally; some time ago; at present; all of a sudden; from this time on; from time to time; since then; when; whenever; next point; a few minutes later; formerly; as; once; since; occasionally; in a moment; shortly; whereupon; previously