鍙ュ瀷鏁寸悊锛？涓锛？褰㈠紡涓昏 / 褰㈠紡瀹捐鍙ュ瀷 1.
it is possible important / necessary / difficult (for sb.) 锛媡o do 2. it is important/ necessary / difficult that sb.
(should) do sth. 3. it is a shame /our duty /my honor to do 4.
it is no use/good doing 鈥？5. it is true /evident / clear/ obvious /certain that ..
6. it is said /reported that鈥？鎹 /鎶ラ亾鈥？
7. it is thought / believed that鈥？璁や负鈥？
8. it is suggested /insisted that sb. (should) do 鈥︿汉浠缓璁？
瑕佹眰。 9. sb think / believe / find/make it possible / a rule / a duty 鈥？
to do 10. 寮鸿皟鍙ュ瀷 ( it + be + 琚己璋冪殑閮ㄥ垎 + that鈥？ 11.
it is/ was not until 鈥？that 鈥？12.
it is/ was (high) time that sb. did sth. 鏄仛鈥︾殑鏃跺欎簡 13.
it is / was (high) time that sb. (should) do 14. it is / was time (for sb.
) to do 15. it is the first / second 鈥？time that sb.
has/ h**e done sth. 16. it was the first / second 鈥？
time that sb. had done sth. 缈昏瘧涓嬪垪鍙ュ瓙瀵归潚灏戝勾瀛﹁岃█鏈夊繀瑕佸涓闂ㄥ 璇？
(adolescent浠栨斁寮冭繖浠藉伐浣滄槸寰堟剼锠㈢殑銆？it is foolish of 鈥鏈変綘甯垜蹇欑湡濂姐？it is kind of 鈥鍔濅粬鎴掔儫鏄病鐢ㄧ殑銆？
it is no use doing涓烘臣娲掔殑鐗涘ザ鍝常鏄病鐢ㄧ殑銆傦紙瑕嗘按闅炬敹锛寰堝浜鸿涓哄父瑙勮繍鍔ㄦ槸鏈夌泭鐨勩？ it 浣滃舰寮忓璇？ beneficial琚個璇峰湪杩欏効婕旇鏄垜鐨勮崳骞搞？
it 浣滃舰寮忓璇鐨勭‘鎶界儫鏈夊鍋ュ悍銆？it is true that 鈥寤鸿鎴戜滑搴旇绔敖鍏ㄥ姏瀛﹀ソ鑻辫銆？it is suggested that 鈥？
; spare no effort鐩村埌鎴戝憡璇変粬鎴戠殑鍚嶅瓧浠栨墠璁ゅ嚭鎴戞潵銆？not 鈥？until; recognize ) he did not recognize me until i told him my name.
(1.鏀逛负鍊掕缁擄紱2.鏀逛负寮鸿皟鍙璇ユ槸鎴戜滑淇濇姢鐜鐨勬椂鍊欎簡銆？
it was锛嬫椂闂存锛媌efore锛嬩富璇紜鍔ㄨ瘝杩囧幓鏃垛滆繃浜嗗涔咃紝鎵嶁︹濓紝濡傦細 it was three hours before he got there. it will be锛嬫椂闂存锛媌efore锛嬩富璇紜鍔ㄨ瘝涓鑸幇鍦ㄦ椂鈥滃涔呭悗锛屽皢鈥︹濓紝濡傦細 it will be three years before we meet again. 涓夊勾鍚庢垜浠啀鐩歌銆？
it is/ has been锛媠ince锛嬩富璇紜鍔ㄨ瘝杩囧幓寮忊滆嚜浠庘︿互鏉ワ紝宸插涔呬簡鈥濓紝濡傦細 it is three years since he joined the army. 浠栧叆浼嶅凡涓夊勾浜嗐？鎴戞劅鍐掑凡鍥涘ぉ浜嗐鑷粠鎴戜滑涓婃瑙侀潰浠ユ潵宸茶繃浜嗕袱鍛浜斿勾涔嬪悗浠栧氨浼氬啀瑙佷綘鐨勩寰堜箙浠ュ悗鎴戜滑鎵嶄細鍐嶈闈杩囦笉浜嗗涔呮垜浠殑甯屾湜灏变細鍙樻垚鐜板疄銆？
杩囦簡3骞达紝鎴戜滑鎵嶅啀娆¤ 闈鍙傝冪瓟妗？1. it is / has been four days since i caught a cold.
2. it is / has been two weeks since we met last. 3.
it will be five years before he meets you again. 4. it will be long before we meet again.
5. it will not be long before we turn our hope into reality. 6.
it was 3 year before we finally met again.
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