happen的一般过去时怎么写？

happen的第三人称单数（三单）为：happens...

happen的音标：happen的英式发音音标为：['hæpən]happen的美式发音音标为：['hæpən]...

happen的现在完成时为：happened...

happen的现在进行时为：happening...

Deep inside the awareness was stirring that something was about to happen.内心深处隐隐感觉到有什么事即将发生。I tried to reassure her, 'Don't worry about it. We won't let it happen again.'...我试图使她安心，“不要担心。我们不会让它再次发生了。”...

happen的近义词有：happen, occur, chance, take place。下面这些词语都可表示"发生"的含义：happen：普通用词，泛指一切客观事物或情况的发生，强调动作的偶然性。occur：较正式用词，可指意外地发生，也可指意料中的发生。chance：侧重事前无安排或无准备而发生的事，特指巧合。take place：多指通过人为安排的发生。...

Remember, keep a positive attitude and good things will happen.记住：保持乐观的心态，好事自然会发生。Do not wait for good things to happen to you. You need to walk towards happiness.不要等待好事降临，你要向幸福进发。This is such an unforeseeable situation ...

happen的近义词/同义词有：take, pass, occur, come, place, off, up, turn, chance, take, turn, overtake, be, pass, come, place, up, occur, chance, become, off。vi.happen的近义词（发生;出现）：take, pass, occur, come, place, off。happen的近义词（碰巧;出现...

vi.发生，碰巧，出现，偶然遇到...

甲川胆色素，次甲基胆色素...

n.流程图，作业图，生产过程图解...

clutch的近义词有：take, grasp, grab, grip, clasp, clutch, snatch, seize。下面这些动词均有"抓住，握紧"的含义：take：最普通用词，不带感情色彩。指用手抓、取某东西或控制某物。grasp：指紧紧抓住、抓牢。grab：指粗暴而急迫的抓住。grip：语气比grasp强，指用手的最大力量紧紧抓住。clasp：指用手紧握或用臂紧抱。clutch：强调匆忙、紧急地抓、抓紧。snatch：...

n.曼氏丝虫病...

Objective : To explore clinical characteristics of chorea, to improve clinical diagnosis accuracy and to reduce misdiagnosis.目的:分 析小舞蹈病的临床特点, 以提高对小舞蹈病的认识,减少临床误诊....

mnemonic的音标：mnemonic的英式发音音标为：[nɪ'mɒnɪk]mnemonic的美式发音音标为：[nɪ'mɑnɪk]...

Tableware, Bathroom Accessories, Fragrances, Lamp, Perfume Bottles, Crystal and Lampshades.采购产品餐具, 浴室配件, 香水, 油灯, 香水瓶, 水晶装饰灯.Gifts Articles, Lamps and Lampshades , Glass Frames, Gifts, Lamps, Fabrics Shaded Lamps.采购产品礼品, ...

包卵细胞...

mazopexy的音标：mazopexy的英式发音音标为：[meɪ'zɒpeksɪ]mazopexy的美式发音音标为：[meɪ'zɒpeksɪ]...

n.药房（兼售化妆品等），〈美〉杂货店...

His speech was full of bombast.他的讲演通篇是夸夸其谈.But Yasha realized that Wolsky's bombast was unnecessary.但是雅夏看出沃尔斯基是在无中生有地吹嘘.He also knows that Iranian President Mahmoud Ahmadinejad's threat wipe Israel off the map ...

我不是故意要打断他的鼻梁。我只是一时气急。I didn't mean to break his nose. I just saw red.股票价格又急涨了11便士，攀至311便士。The shares bounded ahead a further 11p to 311p.卡车疯狂地左摇右晃，从狭窄的山路上急冲而下。The truck sways wildly, careening down narrow mountain r...

skin的一般过去时为：skinned...

v.（言谈举止中）焕发才智( scintillate的第三人称单数 )，谈笑洒脱，闪耀，闪烁...

呋咱...