past tense,present tense,past participleIs this correct?1)Past tenseThe demand for energy dropped steadily between 1985 and 1990 from 5 units of energy to approximately 2 units.2)Present tenseThe demand for energy dropps steadily between 5 units of e

用present perfect tense ,simple past tense , 请问verb 跟tense 有什么区别,present tense就是present simple吗比如verb to be 是present tense!verb was 就是 simple past,past tense! present perfect tense,past perfect tense两者的用法,用中文答 帮我造几句present perfect and past tense 的句子 每个tense造5句就行了, 希望学会英语的Tense.（e.g.Simple Past Tense,Present Perfecet Tense……）注意请勿滥发邮件. 请问present/past perfect tense 跟present/past perf请问present/past perfect tense 跟present/past perfect continuous tense 有何分别?当做时态练习时,如何清楚介定它们.（它们有哪些标示语） 这些present continuous past third person singular这些present continuous past third person singular present perfect tense 是什么 If I were you这种没可能的事后面跟present tense,furture tense or past tense?是I will...或者I would..还是其他的? simple present tense The simple present tense present tense 如题 The present continuous tense present continouous tense是什么意思 The present perfect tense 改变这些英语句子的形式.A snowman is made by us.改成:1._____________(simple past tense)2._____________(present progressive tense)3._____________(present perfect tense)4._____________(future tense) 求英文past tense,present tense,present pefet tence,future tence的习题!我需要练习题和答案,混合的就更好(*^__^*)谢啦! The future Perfect Continuous Tense 用法 .过去完成进行时 the past perfect continuous tense用法1.一般现在时 the present tense 2.一般过去时 the past tense3.一般将来时 the future tense5.现在进行时 the present continuous te simple past&past continue tense