英语求救!有个句子,First,they carefully observe what they are interested in.这个句子、最后面的那个in为森么要加上来、什么时候加什么时候不加、给举个例子,谢谢各路豪杰(^.^)

英语求救!有个句子,First,they carefully observe what they are interested in.这个句子、最后面的那个in为森么要加上来、什么时候加什么时候不加、给举个例子,谢谢各路豪杰(^.^) 用are,us,looking,they,at造个英语句子 这里有个英语句子不懂I remember you and your wife from the first time you stayed with us.这里的from存在的意义是什么 仿写句子,6个,英语.January is the first month of the year . 仿写句子,6个,英语.January is the first month of the year . What a good time they are having in the park是正确的句子吗?求救 2个英语句子哪个对：I am the first one to leave.I am first one to leave.并说下理由 情态动词和频率副词哪个在前面they sometimes can be more dangerous than the first earthquake.不是sometimes 在can be 可这是英语书上的句子 英语合并句子,并说合并理由：He looked inside. He wanted to see what they were doing?对了，合并有限制，是He looked inside _____ ______ what they were doing. （中间之有2个空） there,stood,the bus,to come,waiting,for,they英语在行的帮忙连成个句子 感到有压力用英语怎么说呐...求救.. Life有复数吗我英语不算好,求救! 八年级英语题!全部!求救!有好评! 求救,求救,求救!我英语学的不好 英语试卷答案求救, 求救,高一英语! 英语作业求救 英语白痴求救.