since用于什么时态

分类: 作业答案 • 2023-01-10 13:11:15

问题描述：

since用于什么时态

答

since的四种用法 1) since +过去一个时间点 (如具体的年、月、日期、钟点、1980, last month, half past six).I have been here since 1989.2) since +一段时间+ agoI have been here since five months...

亲们快来~几道时态填空题/这一课的题目是现在完成时.1时态填空：1）There____________(be)great changes in Shanghai during the past decade.Shanghai _________________(become)more and more beartiful .2)The German engineer ___________________(collect)a lot of Chinese stamps since he came to China,for he _________________(appreciate)Chinese history and culture2用have/has been (to) ,have/has been in ,have/has gone to 填空Where is Sara?She_____1_____Australia.Sounds great.___2_she ________2____
I usually spend my weekend watching television在这句中usually是一般现在时态,但后面又用现在分词,这句句子是什么时态
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一般现代时态单三形式以o结尾的单词什么时候加s或es
Twenty years later,he turned teacher.是什么时态
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比值是2.4的最简整数比是（）；0.3：6/7的最简比是（）,比值是（）.
如图,AF,AD分别是三角形ABC的高和角平分线,且角B=α,角C=β,β＞α,求角DAF

since用于什么时态

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