常用句型:It is adj. for sb. to do sth. 和 It is adj. of sb. to do sth. 用于描述某人的品質或行為。
疑問詞+不定式:如 learn, ask, discuss, explain, know, remember, forget, understand, think, consider, decide 等,常用于引出問題或表達意圖。
主謂一致:the number of+復數名詞作主語時,謂語動詞用單數;a number of+復數名詞時,謂語動詞用復數。同時,注意Some, plenty of , a lot of,的謂語動詞根據所修飾的詞而定。
謂語動詞就近一致:如 either…or…/neither…nor…/not only…but also…,謂語動詞和靠近的主語一致。
同位語從句:常跟同位語從句的名詞或短語有 belief /doubt /hope /report /word /opinion /idea 等。
直接引語和間接引語:變間接引語時要向前推一個時態。
定語從句who/whom的用法:介詞+whom,如 He is the man who lives next door. 和 I have many friends to whom I am going to send postcards.
定語從句that/which的用法:通常可以互換,但先行詞是all, much, few, little, something等不定代詞時必須用that。
as和which用法辨析:as的先行詞只能是句子,which的先行詞可以是詞。
表示一…就的引導詞:as soon as/immediately/instantly/the moment/no sooner than/hardly no sooner與hardly在句首時要求句子倒裝。