小学四年级-英语语法知识总结

一．助动词，be’动词应用二．三单用法：he\she\it\人名\yourfather\myfriend\thewater\onebear…后面动词加s或es，有助动词在助动词上加e或es.一句话中只有一处变三单加es或s,有助动词does，则动词不变。如：Hedoesn’tlikecows.Whatdoesyourmotherdo?Doeshelikecats?Thecowlikesgrass.口诀：Does问，does答，否定用doesn’t三．单复数用法：Howmucharethejeans?They’re…yuan.Howmuchistheshirt？It’s…yuan.Wherearethedogs?Theyare…Whereisthesupermarket?\thedog?It’s….四．any和some用法：(1)any和some后都要加名词复数：Doyouhaveanydresses?\coats?\pajamas?Wehavesomeskrits.(2)any用在疑问句和否定句，some用在肯定句：Doyouhaveanycoats?Yes,wehavesome.No,wedon’thaveany.助动词Be动词疑问DoDoesIsAreAm肯定dodoesIsaream否定don’tdoesn’tisn’taren’tamnot用法在句子中有实际意义的动词出现时句子中没有实际意义的动词出现口诀oes问，does答，否定用doesn’tDo问，do答，否定用don’tIs问，is答，否定用isn’tArethey…?问，are答，否定用aren’tAreyou…？问，am答，否定用amnot｛they?｛it?｛they?｛it?\she?\he?五．主格、宾格、物主代词用法：主格（一句话首个单词）宾格(动词后用宾格)形容词性物主代词（谁谁谁的…）第一人称Imemy我的weusour我们的第二人称youyouyour你的，你们的第三人称单数hehimhis他的sheherher她的第三人称复数theythemtheir他们的例：主格宾格Shelikesher.Helikeshim.Helikesme.Theyknowthem.主格物主代词Shelikesherfamily.Helikeshisfamily.Ilikemyfamily.物主代词Hisfatherisa…Hermotherisa….Myfatherisa…六．W词的意思：What什么Whatdoesshedo?Where哪里Whereisthesupermarket?Who谁Whoareyou?When何时Whendoyougotoschool?Why为什么Whose谁的Whosebookisit?How怎么Howmany…?多少Howmuch…?价钱