What he did was (to) + V
Câu chẻ giả (pseudo-cleft): tách hành động ra để nhấn. What + S + V + is/was + phần nhấn. All (that) I want is … cùng kiểu.
Công thứcWhat + S + V + is/was + N / (to) V · All (that) + S + V + is/was + N / to-V
Nhấn hành động
She rewrote the whole chapter overnight. → What she did was (to) rewrite the whole chapter overnight.
Điều cô ấy làm là viết lại cả chương trong một đêm. rewrite nguyên mẫu, không rewriting / rewritten.
Nhấn danh từ
We need more time. → What we need is more time. / All I want is a rest.
Cái chúng ta cần là thêm thời gian. All I want is một chút nghỉ.
Sai: What she did was rewriting the whole chapter.
Đúng: What she did was rewrite / to rewrite the whole chapter.
Sau what S did was dùng nguyên mẫu.