小学英语语法知识点：让步状语从句 1）though， although 注意： 当有though， although时，后面的从句不能有but，但是 though 和yet可连用 Although it s raining， they are still working in the field. 虽然在
小学英语语法知识点：目的状语从句 表示目的状语的从句可以由that， so that， in order that， lest， for fear that， in case等词引导，例如： You must speak louder so that /in order that you can be heard
小学英语语法知识点：关系代词that 的用法 一、不用that的情况 1) 在引导非限定性定语从句时。 (错)The tree， that is four hundred years old， is very famous here. 2) 介词后不能用。 We depend on the land f
小学英语语法知识点：what至who+ever 1）what = the thing which； whatever = anything What you want has been sent here. Whatever you want makes no difference to me. 2) who= the person that whoever= anyo
小学英语语法知识点：先行词和关系词 1)Whoever spits in public will be punished here. (Whoever 可以用 anyone who 代替) 2)The parents will use what they have to send their son to technical school. (what
小学英语语法知识点：It is (high) time that It is (high) time that 后面的从句谓语动词要用过去式或用should加动词原形，但should不可省略。 It is time that the children went to bed. It is high time that t
小学英语语法知识点：比较if only与only if only if表示 只有 ；if only则表示 如果 就好了 。If only也可用于陈述语气。 I wake up only if the alarm clock rings. 只有闹钟响了，我才会醒。 If only the alarm c
