3.我们要知道的语法重点,【now that】【Now that fireman have put out a big forest fire in California, they have been trying to discover its cause.】【Now that the children have cleaned up, you can let them go.孩子们已经梳洗了你可让们走了。】【Now that you are here. youd better stay.既然你已经来了,最好还是住下】。